RY2S-ULAC120V

**Relays  & Sockets** 

**RY/RM** 

## **RY/RM Series Miniature Relays** 

## **Key features:** 

- RY2 (3A), RY4 (5A), RM2 (5A) 

- General purpose miniature relays 

- 3A or 5A contact capacity 

- Wide variety of terminal styles and coil voltages meet a wide range of applications 

- All 4PDT types have arc barriers. 

## **Part Number Selection** 

|||Part Number||
|---|---|---|---|
|Contact|Model|Plug-in Terminal<br>PC Board Terminal|Coil Voltage Code|
|DPDT (Slim) 3A|Standard<br>With Indicator<br>With Check Button<br>With Indicator and Check Button<br>Top Bracket Mounting<br>With Diode (DC coil only)|RY2S-U0<br>RY2V-U0<br>RY2S-UL0<br>RY2V-UL0<br>RY2S-UC0<br>—<br>RY2S-ULC0<br>RY2S-UT0<br>RY2S-UD0<br>RY2V-UD0|AC6V, AC12V, AC24V, AC110V, AC120V,<br>AC220V, AC240V<br>DC6V, DC12V, D24V, DC48V, DC110V<br>DC6V, DC12V, DC24V, DC48V, DC110V|
||Standard|RM2S-U0<br>RM2V-U0||
|DPDT (Wide) 5A|With Indicator<br>With Check Button<br>With Indicator and Check Button<br>Top Bracket Mounting<br>With Diode (DC coil only)<br>With Indicator and Diode (DC coil only)|RM2S-UL0<br>RM2V-UL0<br>RM2S-UC0<br>—<br>RM2S-ULC0<br>RM2S-UT0<br>RM2S-UD0<br>RM2S-ULD0|RYAC6V, AC12V, AC24V, AC110-120V, AC220-240V<br>DC6V, DC12V, DC24V, DC48V, DC100-110V<br>DC6V, DC12V, DC24V, DC48V, DC100-110V|
||Standard|RY4S-U0<br>RY4V-U0||
|4PDT 5A<br>With Indicator<br>RY4S-UL0<br>RY4V-UL0<br>With Check Button<br>RY4S-UC0<br>—<br>With Indicator and Check Button<br>RY4S-ULC0<br>Top Bracket Mounting<br>RY4S-UT0<br>With Diode (DC coil only)<br>RY4S-UD0<br>With Indicator and Diode (DC coil only)<br>RY4S-ULD0<br>Top mount models are designed to mount directly to a panel and do not require a socket.<br>**Ordering Information**<br>When ordering, specify the Part No. and coil voltage code:<br>~~~~oO~~|||AC6V, AC12V, AC24V, AC110-120V,<br>AC220-240V<br>DC6V, DC12V, DC24V, DC48V, DC100-110V<br>DC6V, DC12V, DC24V, DC48V, DC100-110V<br>**Ordering Information**<br>When ordering, specify the Part No. and coil voltage code:<br>~~O~~|



~~O~~ **Ordering Information** When ordering, specify the Part No. and coil voltage code: (example) **RY4S-U       AC110-120V** Part No.                              Coil Voltage Code 

**800-262-IDEC** (4332) • USA & Canada 

799 

**Relays & Sockets** 

**RY/RM** 

## **Sockets** 

|Switches & Pilot Lights|**Sockets**<br>Relays<br>RY2S<br>RM2<br>RY4S|Standard DIN<br>Rail Mount<br>SY2S-05<br>SM2S-05<br>SY4S-05|Finger-safe DIN<br>Rail Mount<br>SY2S-05C<br>SM2S-05C<br>SY4S-05C|Through Panel Mount<br>PCB Mount<br>SY2S-51<br>SY2S-61<br>SM2S-51<br>SY4S-61<br>SY4S-62<br>SY4S-51<br>|<br>||
|---|---|---|---|---|



||Signaling Lights||||||||
|---|---|---|---|---|---|---|---|---|
||||**Hold Down Springs & Clips**||||||
|**Relays & Sockets**<br>Appearance<br>~~<~~|||||Item<br>Pullover Wire<br>Spring<br>Leaf Spring1<br>(side latch)|Relay<br>RY2S<br>RM2<br>RY4S<br>RY2S<br>RM2, RY4S|For DIN<br>Mount Socket<br>SY2S-02F1<br>SY4S-51F1<br>SFA-2022|For Through Panel &<br>PCB Mount Socket<br>SY4S-51F1<br>SY4S-51F1<br>SFA-302|
||Timers||iB.||Leaf Spring1<br>(top latch)|RY2S<br>RM2<br>RY4S|SFA-1012|SFA-301|



1. Not available for PCB mount socket SY4S-62. ~~—~~ 2. Order 2 pieces per relay. 

## **Accessories** 

|**Accessories**|||||
|---|---|---|---|---|
|Item|Appearance|Use with|Part No.|Remarks|
|Aluminum<br>DIN Rail<br>(1 meter length)||All DIN rail sockets|BNDN1000|The BNDN1000 is designed to accommodate DIN mount sockets.<br>Made of durable extruded aluminum, the BNDN1000 measures 0.413<br>(10.5mm) in height and 1.37 (35mm) in width (DIN standard). Standard<br>length is 39” (1,000mm).|
|DIN Rail End<br>Stop|Py|DIN rail|BNL5|9.1 mm wide.|
|Replacement<br>Hold-Down<br>Spring Anchor||Horseshoe clip for all DIN rail<br>sockets|Y778-011|For use on DIN rail mount socket when using pullover wire hold down<br>spring. 2 pieces included with each socket.|



Hipec 

**www.IDEC.com** 

800 

**Relays  & Sockets** 

**RY/RM** 

## **Specifications** 

|Contact Model<br>~~ns~~|Standard Contact|Standard Contact|Standard Contact|
|---|---|---|---|
||RY2 - DPDT Slim<br>~~ee~~|RM2 - DPDT Wide<br>~~ne~~|RY4 - 4PDT|
|Contact Material<br>Contact Resistance1<br>Minimum Applicable Load<br>Operating Time2<br>Release Time2<br>Power Consumption<br>(approx.)<br>Insulation Resistance<br>Dielectric Strength<br>~~ns~~<br>~~|~~<br>~~|~~<br>|<br>|<br>|<br>|<br>~~|~~|Gold-plated silver<br>Silver<br>Gold-plated silver<br>50 mΩ maximum<br>30 mΩ maximum<br>50 mΩ maximum<br>24V DC, 5 mA; 5V DC,<br>10 mA (reference value)<br>24V DC, 10 mA; 5V DC,<br>20 mA (reference value)<br>24V DC, 5 mA; 5V DC,<br>10 mA (reference value)<br>20 ms maximum<br>20 ms maximum<br>AC: 1.1 VA (50 Hz), 1 VA (60 Hz)<br>DC: 0.8W<br>AC: 1.4 VA (50 Hz), 1.2 VA (60 Hz)<br>DC: 0.9W<br>AC: 1.4 VA (50 Hz), 1.2 VA (60 Hz)<br>DC: 0.9W<br>100 MΩ minimum (500V DC megger)<br>Between live and dead parts:<br>1500V AC, 1 minute<br>2000V AC, 1 minute<br>2000V AC, 1 minute<br>Between contact and coil:<br>1500V AC, 1 minute<br>2000V AC, 1 minute<br>2000V AC, 1 minute<br>Between contacts of different poles:<br>1500V AC, 1 minute<br>2000V AC, 1 minute<br>2000V AC, 1 minute<br>Between contacts of the same pole:<br>1000V AC, 1 minute<br>1000V AC, 1 minute<br>1000V AC, 1 minute<br>Electrical:<br>1800 operations/h maximum<br>Mechanical:<br>18,000 operations/h maximum<br>Damage limits:<br>10 to 55 Hz, amplitude 0.5 mm<br>Operating extremes:<br>10 to 55 Hz, amplitude 0.5 mm<br>Damage limits:<br>1000 m/s2<br>Operating extremes:<br>100 m/s2(DPDT Slim), 200 m/s2(4PDT, DPDT Wide)<br>50,000,000 operations<br>200,000 operations (220V AC, 3A)<br>500,000 operations (220V AC, 5A)<br>100,000 operations (220V AC, 5A)<br>200,000 operations (220V AC, 3A)<br>–25 to +55°C (no freezing)<br>–25 to +45°C (no freezing)<br>–25 to +55°C (no freezing)4<br>45 to 85% RH (no condensation)<br>23g<br>35g<br>34g<br>~~ee~~<br>~~ne~~<br>~~|~~<br>~~|~~<br>~~|~~<br>~~|~~<br>|<br>|<br>|<br>|<br>|<br>|<br>|<br>|<br>|<br>|<br>~~|~~<br>|<br>|<br>|<br>|<br>|<br>|<br>|<br>|<br>~~|~~<br>~~|~~<br>|<br>||||
|Operating Frequency<br>Vibration Resistance<br>Shock Resistance<br>Mechanical Life<br>Electrical Life<br>Operating Temperature3<br>Operating Humidity<br>Weight (approx.)<br>~~|~~<br>|<br>|<br>|<br>|<br>~~|~~<br>~~|~~||||



**800-262-IDEC** (4332) • USA & Canada 

801 

**Relays & Sockets** 

**RY/RM** 

**AC Coil Ratings** Rated Current (mA) ±15% at 20°C Coil Resistance (Ω)  ±10% Operation Characteristics AC 50Hz AC 60Hz at 20°C (against rated values at 20ºC) Voltage (V) DPDT DPDT Wide & DPDT DPDT Wide & DPDT DPDT Wide & Max. Continuous Pickup Dropout Slim 4PDT Slim 4PDT Slim 4PDT Applied Voltage Voltage Voltage ~~a~~ 6 170 240 150 200 18.8 9.4 12 86 121 75 100 76.8 39.3 24 42 60.5 37 50 300 153 110 9.6 — 8.4 — 6,950 — 110-120 — 9.4-10.8 — 8.0-9.2 — 4,290 110% 80% maximum 30% minimum 120 8.6 — 7.5 — 8,100 — 220 4.7 — 4.1 — 25,892 — 220-240 — 4.7-5.4 — 4.0-4.6 — 18,820 240 4.9 — 4.3 — 26,710 — **DC Coil Ratings** Rated Current (mA) Coil Resistance (Ω) Operation Characteristics ±15% at 20°C ±10% at 20°C (against rated values at 20ºC) Voltage (V) Max. Continuous Pickup Dropout DPDT Slim DPDT Wide & 4PDT DPDT Slim DPDT Wide & 4PDT Applied Voltage Voltage Voltage 6 128 150 47 40 12 64 75 188 160 ~~===~~ 24 32 36.9 750 650 110% 80% maximum 10% minimum 48 18 18.5 2,660 2,600 100-110 — 8.2-9.0 — 12,250 110 8 — 13,800 — **Contact Ratings UL Ratings** Maximum Contact Capacity Resistive General use Contact Continuous Current Resistive LoadAllowable Contact PowerInductive Load Voltage (V) Rated LoadRes. Load Ind. Load Voltage DPDT Slim DPDT Wide 4PDT DPDT Slim DPDT Wide 4PDT 240V AC 3A 5A 5A 0.8A 2A 5A 110V AC 3A 1.5A DPDT Slim 660 VA AC 176 VA AC 120V AC — — — 1.5A 2.5A — 3A 220V AC 3A 0.8A (RY2) 90W DC 45W DC 100V DC 0.2A 0.4A 0.2A 0.2A — 0.2A 30V DC 3A 1.5A 30V DC 3A 5A 5A 3A — 5A 110V AC 5A 2.5A DPDT Wide 1100VA AC 440VA AC 5A 220V AC 5A 2A (RM2) 150W DC 75W DC **CSA Ratings** 30V DC 5A 2.5A Resistive General use 4PDT (RY4) 5A 1200 VA AC150W DC 288 VA AC60W DC 240V AC30V DC 5A5A 1.2A2A Voltage DPDT Slim DPDT Wide 4PDT DPDT Slim DPDT Wide 4PDT Note: Inductive load for the rated load — cos ø = 0.3, L/R = 7 ms 240V AC 3A 5A 5A 0.8A 2A 5A 120V AC 3A 5A — 1.5A 2.5A — **TÜV Ratings** 100V DC — — — 0.2A 0.4A 0.2A DPDT DPDT 30V DC 3A 5A 5A 1.5A 2.5A 1.5A Voltage 4PDT Slim Wide ~~— =~~ 240V AC 3A 5A 5A 30V DC 3A 5A 5A AC: cos ø = 1.0, DC: L/R = 0 ms ~~_ s~~ t **www.IDEC.com** 802 

**Relays  & Sockets** 

**RY/RM** 

## **Socket Specifications** 

|Switches & Pilot Lights<br>Signaling Lights<br>**Socket Specifications**<br>Sockets<br>Terminal<br>Electrical Rating<br>Wire Size<br>Torque<br>DIN Rail<br>Mount<br>Sockets<br>SY2S-05<br>M3 screws with captive wire clamp<br>300V, 7A<br>Maximum up to 2–#14AWG<br>5.5 - 9 in•lbs<br>SM2S-05<br>M3 screw with captive wire clamp<br>300V, 10A<br>Maximum up to 2–#14AWG<br>5.5 - 9 in•lbs<br>SY4S-05<br>M3 screw with captive wire clamp<br>300V, 7A*<br>Maximum up to 2–#14AWG<br>5.5 - 9 in•lbs<br>Finger-safe<br>DIN Rail<br>Mount<br>SY2S-05C<br>M3 screws with captive wire clamp, fingersafe<br>300V, 7A<br>Maximum up to 2–#14AWG<br>5.5 - 9 in•lbs<br>SM2S-05C<br>M3 screw with captive wire clamp, fingersafe<br>300V, 10A<br>Maximum up to 2–#14AWG<br>5.5 - 9 in•lbs<br>SY4S-05C<br>M3 screw with captive wire clamp, fingersafe<br>300V, 7A*<br>Maximum up to 2–#14AWG<br>5.5 - 9 in•lbs<br>Through<br>Panel Mount<br>Socket<br>SY2S-51<br>Solder<br>250V, 7A<br>—<br>—<br>SM2S-51<br>Solder<br>250V, 10A<br>—<br>—<br>SY4S-51<br>Solder<br>250V, 7A*<br>—<br>—<br>PCB Mount<br>Socket<br>SY2S-61<br>PCB Mount<br>300V, 7A<br>—<br>—<br>SY4S-61<br>PCB Mount<br>300V, 7A<br>—<br>—<br>SY4S-62<br>PCB Mount<br>250V, 7A<br>—<br>—<br>~~a~~<br>~~|~~<br>~~|~~<br>~~|~~<br>~~|~~<br>~~|~~<br>~~|~~<br>|<br>|<br>|<br>|<br>~~|~~<br>~~|~~<br>~~|~~<br>~~|~~<br>~~|~~<br>~~|~~<br>|<br>|<br>|<br>|<br>|<br>|<br>|<br>|<br>||
|---|



* When using only 2 poles of the 4-poles, the UL recognized current is 10A. 

**800-262-IDEC** (4332) • USA & Canada 

803 

**Relays & Sockets** 

**RY/RM** 

## **Characteristics (Reference Data)** 

**==> picture [557 x 671] intentionally omitted <==**

**----- Start of picture text -----**<br>
Characteristics (Reference Data)<br>Electrical Life Curves<br>AC Load<br>(RY2) (RY4)<br>1000 1000<br>500 110V AC resistive 500<br>220V AC resistive<br>240V AC resistive<br>200 200<br>100<br>100<br>240V AC inductive<br>50<br>50<br>20 20<br>110V AC inductive<br>10 220V AC inductive 10<br>0 1 2 3 0 1 2 3 4 5<br>Load Current (A) Load Current (A)<br>(RM2) 110V AC resistive<br> 220V AC resistive<br>1000<br>500<br>100<br>50<br>110V AC inductive<br>220V AC inductive<br>is 10<br>0 1 2 3 4 5<br>Load Current (A)<br>DC Load `<br>(RY2) 30V DC resistive (RY4)<br>1000 30V DC inductive 1000<br>500 500<br>200<br>200 30V DC resistive<br>100<br>100 30V DC inductive<br>50<br>50<br>20 20<br>100V DC resistive<br>10 = 100V DC inductive 10<br>0 5 2 3 0 1 2 3 4 5<br>Load Current (A) Load Current (A)<br>(RM2)<br>30V DC resistive<br>1000 30V DC inductive<br>500<br>100<br>50<br>100V DC resistive<br>100V DC inductive<br>a 10<br>0 1 2 3 4 5<br>Load Current (A)<br>Switches & Pilot Lights<br>Life ( ¥ 10,000 operations)<br>Life (¥ 10,000 operations)<br>Signaling Lights<br>Relays & Sockets<br>Life ( ¥ 10,000 operations)<br>Timers<br>Life (¥ 10,000 operations) Life (¥ 10,000 operations)<br>Contactors<br>Terminal Blocks<br>Life (¥ 10,000 operations)<br>Circuit Breakers<br>**----- End of picture text -----**<br>


**www.IDEC.com** 

804 

**Relays  & Sockets** 

**RY/RM** 

**Maximum Switching Capacity** 

**==> picture [497 x 418] intentionally omitted <==**

**----- Start of picture text -----**<br>
(RY4) AC resistive<br>(RY2) AC inductive<br>5 5<br>3 AC resistive 3<br>2<br>AC<br>inductive DC resistive<br>1 1<br>DC inductive DC resistive<br>0.5 0.5 DC inductive<br>0.3<br>0.2<br>0.11 = 5 10 50 100 200 300 1 10 20 30 50 100 200 300<br>Load Voltage (V) Load Voltage (V)<br>(RM2)<br>5<br>AC resistive<br>AC<br>inductive<br>1 DC inductive DC resistive<br>0.5<br>0.1 i<br>1 5 10 50 100 200 300<br>Load  Voltage (V)<br> Continuous Load Current vs. Operating Temperature Curve (Standard Type, With Check Button, and Top Bracket Mounting Type)<br>(RM2) 100<br>(RY2) 100 (RY4) 100 90<br>90 90<br>80<br>80 80<br>70 DC Coil 70 DC Coil 70 DC Coil<br>60<br>60 60<br>50 AC Coil 50 AC Coil 50 AC Coil<br>40 40 40<br>30 30 30<br>20 20 20<br>10 10 10<br>0 o 1 2 o 3 0 1 2 3 0 b 1 2 s 3 4 5<br>Load Current (A) Load Current (A) Load Current (A)<br>Load Current (A) Load Current (A)<br>Load Current (A)<br>Operating Temperature (C)<br>Operating Temperature (C) Operating Temperature (C)<br>**----- End of picture text -----**<br>


## **Continuous Load Current vs. Operating Temperature Curve (Standard Type, With Check Button, and Top Bracket Mounting Type)** 

**800-262-IDEC** (4332) • USA & Canada 

805 

**Relays & Sockets** 

**RY/RM** 

## **Internal Connection (View from Bottom) Standard Type** 

**Standard Type** DPDT Slim (RY2) ~~P~~ S 

**==> picture [343 x 244] intentionally omitted <==**

**----- Start of picture text -----**<br>
DPDT Slim (RY2) DPDT Wide (RM2) 4PDT (RY4)<br>P S ) ( P G PR<br>With Indicator (-L type)<br>DPDT Slim (RY2) DPDT Wide (RM2)<br>Coil  Coil<br>Below  Below<br>100V  24V AC/<br>AC/DC DC<br>ae A<br>Coil<br>Coil 24V<br>100V<br>AC/DC<br>AC/DC<br>and over<br>and over<br>**----- End of picture text -----**<br>


**With Indicator (-L type)** DPDT Slim (RY2) 

**==> picture [122 x 62] intentionally omitted <==**

**----- Start of picture text -----**<br>
With Check Button<br>Front<br>Pushbutton<br>i<br>Contacts can be operated by pressing the<br>check button.<br>**----- End of picture text -----**<br>


4PDT (RY4) 

When the relay is energized, the indicator goes on. 

- An LED protection diode is not contained in DPDT relays for coils below 100V DC. 

- If coil polarity is reversed LED will not light. 

## **With Diode (-D type)** 

DPDT Slim (RY2) 

DPDT Wide (RM2) 

4PDT (RY4) 

Contains a diode to absorb the back emf generated when the coil is de-energized. The release time is slightly longer. 

- Diode Characteristics Reverse withstand voltage: 1,000V Forward current: 1A 

## **With Indicator and Diode (-LD type)** 

**==> picture [528 x 63] intentionally omitted <==**

**----- Start of picture text -----**<br>
DPDT Wide (RM2) 4PDT (RY4) DPDT Wide (RM2) 4PDT (RY4)<br>1 4 1 2 3 4<br>Coil  Coil 24V  5 8 5 6 7 8 Contains an LED<br>Below  DC and  9 12 9 10 11 12 indicator and a surge<br>24V DC over 13(–) (+)14 13(–) (+)14 absorber.<br>**----- End of picture text -----**<br>


Hipec 

**www.IDEC.com** 

806 

**Relays  & Sockets** 

**RY/RM** 

## **Dimensions (mm)** 

**==> picture [22 x 8] intentionally omitted <==**

**----- Start of picture text -----**<br>
RY2S<br>**----- End of picture text -----**<br>


**==> picture [22 x 8] intentionally omitted <==**

**----- Start of picture text -----**<br>
RY4S<br>**----- End of picture text -----**<br>


**==> picture [25 x 8] intentionally omitted <==**

**----- Start of picture text -----**<br>
RM2S<br>**----- End of picture text -----**<br>


**==> picture [561 x 676] intentionally omitted <==**

**----- Start of picture text -----**<br>
Total length from panel surface including relay socketSY2S-05: 61.5 (63.5) max., SY2S-51: 39.6 (41.6) max. Total length from the panel surface including relay socketSY4S-05: 61.5 (63.5) max., SY4S-51: 39.6 (41.6) max. Total lenSM2S-05: 61.5 (63.5) max., SM2S-51: 39.6 (41.6) max.gth from the panel surface including relay socket.<br>3 × ø1.2 oblong hole Dimensions in the (  )include a hold-down spring. 2.2 × ø1.2 oblong hole Dimensions in the (   )include a hold-down spring. Dimensions in the (  )include a hold-down spring.<br>rr rr<br>2.2 × ø1.2 hole<br>1 4<br>5 8<br>1 4<br>5 8 9 12<br>9 12 15 26 37 48 13 14<br>13 14 9 10 11 12 35.6 max. 6.4 21<br>13 14<br>a) 35.6 max. 5.4 14 ig) ee<br>35.6 max. 6.4 21<br>RY2V RY4V RM2V<br>0.5 0.5<br>8-ø1 holes<br>S H<br>1 5 48 _ o m 14-ø1 holes 6.6 oy 0.5 8-ø1 hole<br>9 12 1 2 3 4<br>13 14 5 6 7 8<br>9 10 11 12 1 5 48<br>35.6 max. 4 14 4.4 13 14 9 12<br>13 14<br>35.6 max. 4 21 4.4 4.4<br>4.4 35.6 max. 4 21 13.2<br>RY2S-UT RY4S-UT RM2S-UT<br>3 ¥ ø1.2 oblong hole<br>Ai 2.2 ¥ ø1.2 oblon C g hole F Cr 2.2 ¥ ø1.2 hole<br>1 4<br>59 128 159 1026 1137 1248 1 59 1248<br>13 14 13 14 13 14<br>3.5 2 3.5 2 3.5 2<br>14.5 35.6 max. 5.4 21.5 35.6 max. 6.4 21.5 35.6 max. 6.4<br>AEE IO Ee @ Esea<br>800-262-IDEC  (4332) • USA & Canada<br>EipEc<br>2.6<br>2.6 2.6<br>0.5 27.5<br>0.5 27.5<br>0.5 27.5<br>Signaling Lights<br>0.8 2.6<br>0.8<br>4.1 0.8<br>2.6 2.6<br>7.15 4.1 Relays & Sockets<br>0.5 27.5 6.4 12.7 7.15 4.1<br>0.5 27.5 6.4 12.7<br>0.5 27.5 12.7<br>6.4<br>7.15<br>Timers<br>2.6 4.4<br>4.4 13.2<br>2.6 4.4 2.6<br>4.4<br>0.5 4.1 0.5 4.1 0.5 4.1<br>43.2 38 6.3 27.5 43.2 38 6.3 27.5 43.2 38 6.3 27.5<br>Contactors<br>6.4 6.4 6.4<br>Terminal Blocks<br>Circuit Breakers<br>**----- End of picture text -----**<br>


807 

**Relays & Sockets** 

**RY/RM** 

## **Dimensions** 

**Standard DIN Rail Mount Sockets SY2S-05** 17 31.5 6 M3 TerminalScrew 18 DIN Rail(BNDN)(BNDN)BNDN)) 

## **SM2S-05** 

**==> picture [551 x 114] intentionally omitted <==**

**----- Start of picture text -----**<br>
17 30 31.5<br>31.5<br>6 M3 TerminalScrew 18 DIN Rail(BNDN)(BNDN)BNDN)) Terminal Arrangement 6 M3 TerminalScrew 18 DIN Rail(BNDN) Terminal Arrangement<br>2-ø4.2 Mounting Holes(or M4 Tapped Holes) 48 15 2-ø4.2 Mounting Holes(or M4 Tapped Holes) 48 15<br>16 26<br>4 max. 4.8 min. 14 1 2 139 4 max. 4.8 min. 1214 139<br>16 14.5 (Top View) 18.5 (Top View)<br>20 25 5.9 max. ø3.2 min. 26 25 5.9 max. ø3.2 min.<br>0.7<br>62 45 62 45<br>4.2 4.2<br>2 3<br>Signaling Lights<br>**----- End of picture text -----**<br>


## **SY4S-05** 

**==> picture [266 x 95] intentionally omitted <==**

**----- Start of picture text -----**<br>
30<br>31.5<br>6 DIN Rail<br>rst M3 TerminalScrew 18 (BNDN) 2-ø4.2 Mounting Holes(or M4 Tapped Holes) Terminal Arrangement 48 73 62 15<br>26<br>4 max. 4.8 min. 14 13<br>ai o F 12 11 10 9<br>18.5 5.9 max. (Top View)<br>26 25 ø3.2 min.<br>0.7<br>62 45<br>4.2<br>3<br>**----- End of picture text -----**<br>


## **Finger-safe DIN Rail Mount Sockets** 

## **SY2S-05C** 

## **SM2S-05C** 

**==> picture [560 x 243] intentionally omitted <==**

**----- Start of picture text -----**<br>
17.26 M3 TerminalScrew 35.525 DIN Rail(BNDN) 2-ø4.2 Mounting Holes(or M4 Tapped Holes) Terminal Arrangement 48 15 30 6 M3 TerminalScrew 3525.185 DIN Rail(BNDN) 2-ø4.2 Mounting Holes(or M4 Tapped Holes) Terminal Arrangement 8 5<br>4 1<br>16<br>26<br>14 13<br>12 9 14 13<br>b 16 we+« 18.2 Ring terminals cannot be used. (Top View) F R iv Ring terminals cannot be used. e & (Top View)12 9<br>20 29 26 18.2<br>29<br>SY4S-05C<br>30 35.5<br>_ 6 M3 TerminalScrew 25 DIN Rail(BNDN) Terminal Arrangement<br>18 2-ø4.2 Mounting Holes(or M4 Tapped Holes) 48 73 26 15<br>=<br>26<br>14 13<br>24 <<) 12 11 10 9<br>Ring terminals  (Top View)<br>i cannot be used. ik<br>26 18.2<br>29<br>ø5.5<br>ø5 ø5.5<br>Timers<br>4.2 4.2<br>64 46 64 46<br>1.6 2 1.6 2<br>Contactors<br>4.2<br>64 46<br>1.6 2<br>Terminal Blocks<br>**----- End of picture text -----**<br>


Hipec 

**www.IDEC.com** 

808 

**Relays  & Sockets** 

**RY/RM** 

## **Through Panel Mount Socket** 

**SY2S-51** 

## **SM2S-51** 

**==> picture [533 x 524] intentionally omitted <==**

**----- Start of picture text -----**<br>
Panel Thickness:1 to 2 Terminal Arrangement [18(N–1)+12.4] +0.50 Panel Thickness:1 to 2 Terminal Arrangement [27 (N–1) + 21.4] +0.50<br>1 4<br>1 4 5 8<br>5 8 9 12<br>9 12 13 14<br>13 14 27 3 (Bottom View) N: No. of sockets mounted<br>18 3 (Bottom View) N: No. of sockets mounted 11<br>11 18.7<br>18.7 2.4 * 10.4 min. when using hold-down springs<br>2.4 * 10.4 min. when husing hold-down springs 21.2<br>12.2<br>eee<br>SY4S-51<br>Panel Thickness:1 to 2 Terminal Arrangement [27 (N–1) + 21.4] +0.50<br>1 2 3 4<br>5 6 7 8<br>9 10 11 12<br>13 14<br>27 3 (Bottom View) N: No. of sockets mounted<br>11<br>18.7<br>A<br>2.4 * 10.4 min. when using hold-down springs<br>21.2<br>PCB Mount Sockets<br>SY2S-61 SY4S-61<br>4.4 13.6 min. 13.2 13.8 min.<br>Terminal Arrangement 8.8<br>4.4<br>1 4 Terminal Arrangement<br>5 8<br>9 12 1 2 3 4<br>5 6 7 8<br>13 14 9 10 11 12<br>18 3 (Bottom View) 13 14<br>11 8-ø2 holes 27 3 (Bottom View)<br>11<br>15 15-ø2 holes<br>IE He # * 19.2 min. when using m 3 (Tolerance 0.1) a iS hl 15 & Hee<br>1.5    hold-down springs 1.5 * 19.2 min. when using (Tolerance 0.1)<br>12.2    hold-down springs<br>21.2<br>SY4S-62<br>8.2 min.**<br>Terminal Arrangement<br>1 2 3 4<br>5 6 7 8<br>9 10 11 12<br>13 14<br>=i ®<br>21.2 3 (Bottom View)<br>11 15-ø2 holes<br>15<br>(Tolerance 0.1)<br>e 1.5 e * 17.2 min. when using a hold-down spring.<br>* *13.2 min. when using a hold-down spring for<br>the relay with check button<br>13.2<br>8.8<br>4.4<br>31 25.4 0.2+25.60 31 25.4 +0.225.60<br>0.3<br>0.3 5.4 min.*<br>5.4 min.*<br>31 25.4 0.2+25.60<br>0.3<br>5.4 min.*<br>10.4<br>4.1<br>31 25.4 16.8 9 31 25.4 16.8 10.4 4.1 9<br>0.3<br>0.3<br>14.2 min.*<br>14.2 min.*<br>1.4<br>4.1<br>29 0.3 16.8 10.4 9<br>1.4<br>12.2 min.*<br>**----- End of picture text -----**<br>


**800-262-IDEC** (4332) • USA & Canada 

809 

**Relays  & Sockets** 

**Operating Instructions** 

## **Operating Instructions** 

## **Driving Circuit for Relays** 

## **Protection for Relay Contacts** 

1. To ensure correct relay operation, apply rated voltage to the relay coil. 

1. The contact ratings show maximum values. Make sure that these values are not exceeded. When an inrush current flows through the load, the contact may become welded. If this is the case, connect a contact protection circuit, such as a current limiting resistor. 

## 2. Input voltage for the DC coil: 

A complete DC voltage is best for the coil power to make sure of stable relay operation. When using a power supply containing a ripple voltage, suppress the ripple factor within 5%. When power is supplied through a rectification circuit, the relay operating characteristics, such as pickup voltage and dropout voltage, depend on the ripple factor. Connect a smoothing capacitor for better operating characteristics as shown below. 

2. Contact protection circuit: 

When switching an inductive load, arcing causes carbides to form on the contacts, resulting in increased contact resistance. In consideration of contact reliability, contact life, and noise suppression, use of a surge absorbing circuit is recommended. Note that the release time of the load becomes slightly longer. Check the operation using the actual load. Incorrect use of a contact protection circuit will adversely affect switching characteristics. Four typical examples of contact protection circuits are shown in the following table: examples of contact protection circuits are shown in the following table: 

**==> picture [539 x 388] intentionally omitted <==**

**----- Start of picture text -----**<br>
Pulsation<br>longer. Check the operation using the actual load. Incorrect use of a contact<br>SmoothingCapacitor Emin Emax Emean DC protection circuit will adversely affect switching characteristics. Four typical examples of contact protection circuits are shown in the following table:<br>+<br>– R Relay Ripple Factor (%) Emax –EmeanEmin ¥ 100% This protection circuit can be used when the load<br>Emax = Maximum of pulsating current impedance is smaller than the RC impedance in an<br>EminEmean = DC mean value= Minimum of pulsating current Power C R Ind. Load AC load power circuit.• R: Resistor of approximately the same resistance<br>3. Leakage current while relay is off:  value as the load<br>When driving an element at the same time as the relay operation, special  • C:0.1 to 1 µF<br>consideration is needed for the circuit design. As shown in the incorrect  This protection circuit can be used for both AC and<br>circuit below, leakage current (Io) flows through the relay coil while the relay  DC load power circuits.<br>is off. Leakage current causes coil release failure or adversely affects the  R: Resistor of approximately the same resistance<br>value as the load<br>vibration resistance and shock resistance. Design a circuit as shown in the<br>fro, Foo I C: 0.1 to 1 µF<br>correct example.<br>This protection circuit can be used for DC load power<br> Incorrect  Correct  + circuits. Use a diode with the following ratings.<br>R TE R Power D Ind. Load Reverse withstand voltage: Power voltage of the<br>– load circuit x 10<br>Io Forward current: More than the load current<br>=a =ee (CE<br>This protection circuit can be used for both AC and<br>DC load power circuits.<br>4. Surge suppression for transistor driving circuits:<br>For a best result, when using a power voltage of 24<br>When the relay coil is turned off, a high-voltage pulse is generated, causing a  Power Ind. Load<br>to 48V AC/DC, connect a varistor across the load.<br>transistor to deteriorate and sometimes to break. Be sure to connect a diode<br>tt When using a power voltage of 100 to 240V AC/DC,<br>to suppress the back electromotive force. Then, the coil release time becomes  connect a varistor across the contacts.<br>slightly longer. To shorten the coil release time, connect a Zener diode<br>between the collector and emitter of the transistor. Select a Zener diode with  3. Do not use a contact protection circuit as shown below:<br>a Zener voltage slightly higher than the power voltage.<br>This protection circuit is very effective in arc suppression when<br>Back emf<br>suppressing diode opening the contacts. But, the capacitor is charged while the<br>+– R Relay PowerC Load contacts are opened. When the contacts are closed, the capacitor is discharged through the contacts, increasing the possibility of contact welding.<br>This protection circuit is very effective in arc suppression when<br>C Load opening the contacts. But, when the contacts are closed, a current<br>B S 8 Power flows to charge the capacitor, causing contact welding.<br>RC<br>Diode<br>Varistor<br>Varistor<br>**----- End of picture text -----**<br>


Generally, switching a DC inductive load is more difficult than switching a DC resistive load. Using an appropriate arc suppressor, however, will improve the switching characteristics of a DC inductive load. 

## **Soldering** 

1. When soldering the relay terminals, use a soldering iron of 30 to 60W, and quickly complete soldering (within approximately 3 seconds). 

2. Use a non-corrosive rosin flux. 

**800-262-IDEC** (4332) • USA & Canada 

817 

**Relays & Sockets** 

**Operating Instructions** 

## **Operating Instructions con’t** 

## **Other Precautions** 

   2. UL and CSA ratings may differ from product rated values determined by IDEC. 

1. General notice: 

- To maintain the initial characteristics, do not drop or shock the relay. 

   3. Do not use relays in the vicinity of strong magnetic field, as this may affect relay operation. 

- The relay cover cannot be removed from the base during normal operation. To maintain the initial characteristics, do not remove the relay cover. 

Use the relay in environments free from condensation, dust, sulfur dioxide (SO2), and hydrogen sulfide (H2S). 

Make sure that the coil voltage does not exceed applicable coil voltage range. 

## **Safety Precautions** 

- Turn off the power to the relay before starting installation, removal, wiring, maintenance, and inspection of the relays. Failure to turn power off may cause electrical shock or fire hazard. 

- Observe specifications and rated values, otherwise electrical shock or fire hazard may be caused. 

- Use wires of the proper size to meet voltage and current requirements. Tighten the terminal screws on the relay socket to the proper tightening torque. 

- Surge absorbing elements on AC relays with RC or DC relays with diode are provided to absorb the back electromotive force generated by the coil. When the relay is subject to an excessive external surge voltage, the surge absorbing element may be damaged. Add another surge absorbing provision to the relay to prevent damage. 

## **Precautions for the RU Relays** 

- Before operating the latching lever of the RU relay, turn off the power to the RU relay. After checking the circuit, return the latching lever to the original position. 

- Do not use the latching lever as a switch. The durability of the latching lever is a minimum of 100 operations. 

- When using DC loads on 4PDT relays, apply a positive voltage to terminals of neighboring poles and a negative voltage to the other terminals of neighboring poles to prevent the possibility of short circuits. 

- DC relays with a diode have a polarity in the coil terminals. Apply the DC voltage to the correct terminals. 

Hipec 

**www.IDEC.com** 

818