157-33Q200

**TYPE 157** 

## ——————————aa **GENERAL PURPOSE RELAY** 

## **TYPE 157** 

## **FEATURES:** 

- The Type 157 relay is a rugged power driver offering superior 3/16” through air and 3/8” over-surface spacing. 

- An interlocked frame and contact block prevent contact misalignment during plug-in. 

- Open or dust covered available with indicator lamps and push-to-operate buttons. 

- A magnetic latching version provides a unique switchable core which cannot be falsely latched. 

- All Midtex catalog Type 157 relays have UL & CSA Recognition as motor controllers through 600 VAC 

- They provide through air spacing of 3/16” minimum and over-surface spacing of 3/8” minimum and are recognized for 1/2 hp motor controller applications at 240/480/600 VAC (1/3 hp at 120 VAC). 

- Chassis mounted open relays must employ 1/32” additional insulation between mounting surface and relay to insure 1/2” over-surface and through air to the mounting surface. 

- Sockets for the 157 relays are constructed to meet UL requirements for these ratings. 

- UL File E38802 CSA LR54109 

## **CONTACTS** 

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|||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|CONTACTS|COILS|
|Material|UL & CSA Recognition Rating|Voltage Ratings|6 to 240 VAC 50/60 Hz 5 to 110 VDC|
|AC–85% of nominal|
|-100|1/8” Fine Sliver|5 amp, 28 VDC/|120/240 VAC, 80% pf|Pick-up Voltage|
|DC–75% of nominal|
|(gold flash)|2 amp|480/600 VAC, 80% pf|
|5 amp|1/8 hp1/4 hp|120 VAC240 VAC|Duty Cycle|operation at 25% overvoltageRated for continuous duty|
|2 amp 7.2 amp in rush, 24 VAC (SP devices)|Shock|15 g’s, 11±1mS (non-operating test,|
|no mechanical damage)|
|-200|3/16” Silver|10 amp, 28 VDC/|120/240 VAC, 80% pf|Vibration|0.1” DA or 10g’s, 10 to 55 Hz|
|Cadmium Oxide|1/3 hp|120 VAC|(operating test, no contact chatter)|
|10 amp|1/2 hp|277/240/480/600 VAC|Power Ratings*|
|36 LRA, 8.5 FLA, 18VDC|
|3 amp|480/600 VAC, 80% pf|1 & 2 Pole AC|3 Pole AC|DC|
|10 amp|277VAC resistive|Nominal|1.7 VA|2.0 VA|1.2 W|
|Max. Continuous|2.7 VA|3.1 VA|1.9 W|
|-300|3/16” Silver|15 amp|277/240/120 VAC|
|Cadmium Oxide|10 amp|28 VDC|Temperature Rise*|
|15 amp|3 amp|480/600 VAC|1 & 2 Pole AC|3 Pole AC|DC|
|(UL on 1 & 2PDTonly)|1/3 hp1/2 hp|120 VAC240/480/600 VAC|Nominal Voltage|Open|35°C|45°C|Enc.|Open|45°C|60°C|Enc.|Open|35°C|40°C|Enc.|
|600w Tungsten|120/240 VAC|
|25% overvoltage|55°C|65°C|75°C|85°C|50°C|55°C|
|-700|1/8” Fine|5 amp, 28 VDC/|120/240 VAC, 80% pf|*60 Hz operation|
|Sliver Gold|2 amp|480/600 VAC, 80% pf|Increase values 20% for 50 Hz operation.|
|Diffused|1/8 hp|120 VAC|
|1/4 hp|240 VAC|
|COIL CHARACTERISTICS|
|2 amp 7.2 amp in rush, 24 VAC (SP devices)|
|Resistance|
|Nominal Voltage|
|-3MO|Mag Blowout|1 Form X|12A @ 150 VDC|(Ohms±10%)|
|(See Note)|2 Form A|7A @ 150 VDC|5|20|
|2 Form C|5A @ 150 VDC|6|32|
|V|
|12|120|
|Note:|For Mag Blowout positive contacts are 7 and 9. Negative contacts are 1, 3, 4 and 6.|D|
|24|470|
|C|
|48|1800|
|ELECTRICAL/MECHANICAL CHARACTERISTICS|
|110|10000|
|All ratings at 25°C ambient|1 & 2PDT|3PDT|
|Design and Construction|6|6.0|4.2|
|Recognized by UL for motor controllers up to 600 VAC in accordance with UL Standard|V|12|21|18|
|508, Industrial Control Equipment.|Optional features include manual push-to-test button|A|24|75|72|
|and indicator lamp.|C|120|2250|1700|
|Insulation Material|-High quality phenolic|_—_|240|9100|7200|

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**Weight** (approximate)-2.3 ounces (64 grams)—open relay 3.0 ounces (84 grams)—enclosed relay 

## **Marking** 

Midtex name, part number, nominal voltage, and terminal identification are standard. Customer marking optional. 

**Initial Contact Resistance** –50 milliohms max. 

15 

Libertyville IL (847) 680-7400 FAX (847) 680-8169    www.ciitech.com 

**TYPE 157** 

## **PART NUMBERING SYSTEM** 

|**Relay Type**|**Enclosure and Terminals**|**Contact Arr.**|**Coil**|**Contacts**|**Standard or Special**|
|---|---|---|---|---|---|
|157|1–Open, Solder/Plug-in/ .187 Quick<br>Connect<br>2–Plain Cover, Solder/Plug-in/ .187<br>Quick Connect<br>3–Flanged Cover, Solder/ .187 Quick<br>Connect<br>4–Plain Cover with End Mounting<br>Bracket, Solder/Plug-in/.187 Quick<br>Connect<br>9–Plain Cover, P.C. Terminal<br>0–Special (Including top flange)|1–SPDT<br>2–2PDT<br>3–3PDT<br>4–1 Form A<br>5–1 Form B<br>6–2 Form A<br>7–2 Form B<br>8–1 Form X<br>9–1 Form Y<br>0–Special|E–5 VDC<br>A–6 VDC<br>B–12 VDC<br>C–24 VDC<br>D–48 VDC<br>F–110 VDC<br>N–6 VAC<br>P–12 VAC<br>Q–24 VAC<br>T–120 VAC<br>U–240 VAC<br>S–Special|1–1/8” Fine Silver<br>Gold Flash<br>2–3/16” Silver<br>Cadmium Oxide<br>(10 Amp)<br>3–3/16” Silver<br>Cadmium Oxide<br>(15 Amp)<br>7–1/8” Fine Silver<br>Gold Diffused<br>0–Special|00–Standard<br>C0–Push Button Actuator<br>D0–Diode across Coil<br>F0–Class “F” Coil<br>L0–Lamp Across Coil<br>LC–Lamp & Push Button<br>M0–Mag Blowout<br>09–PC Terminal without<br>Cover. Use 9 in first digit.<br>A1-Z9–Special<br>*Top Flange avail.–Consult<br>Factory|



Example: 157-23C200 is a Type 157 relay, plain cover, solder/plug-in/.187 quick connect terminals 3 pole double throw contacts, 24VDC coil, 3/16” diameter Silver Cadmium Oxide contacts, of completely standard construction. 

**Stock items** :157-22B200, 157-22C200, 157-22C2L0, 157-22F200, 157-22Q200, 157-22Q2LC, 157-22T200, 157-22T2L0, 157-22U200, 157-23B200, 157-23C200, 157-23C2L0, 157-23Q200, 157-23Q2L0, 157-23T200, 157-23T2L0, 157-23T2LC, 157-32B200, 157-32C200, 157-32Q200, 157-32T200, 157-33B200, 157-33C200, 157-33Q200, 157-33T200. 

## **TEMPERATURE RANGE** 

|**Operating****|**Minimum**|**Maximum**|**Maximum**|**Storage**|
|---|---|---|---|---|
|||**Open**|**Enclosed**||
|1 & 2 pole<br>3 pole<br>1, 2, 3, pole<br>AC<br>AC<br>DC|–45°C<br>–45°C<br>–45°C|+70°C<br>+60°C<br>+80°C|+60°C<br>+45°C<br>+70°C|–65°C to +100°C|



**50/60 Hz operation, based on 105°C limit. 

## **ELECTRICAL CHARACTERISTICS** 

## **Dielectric Breakdown** 

Greater than 1200 VAC, RMS 60 Hz across open contacts Greater than 2500 VAC, RMS 60 Hz all other mutually insulated elements 

## **Insulation Resistance** 

1000 megohms minimum at 500 VDC 

## **Timing** 

Operate time—15 mS nominal, 20 mS maximum Release time—6 mS nominal, 10 mS maximum (Nominal voltage, no coils suppression, DC relays only) 

## **Life Expectancy** 

Mechancial—10 million operations Electrical—100,000 operations at rated load 

## **DIMENSIONS** 

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Open 750 Model 157-3<br>Model 157-1<br>Max. 400 620 (19.05) we<br>.031 (37.28) (5.904)2.090 Max. iMax.(35.56) (15.74) No<br>Ref. > = v =<br>(0.78) 24 | oa<br>3 z ace ea | Qn | a Tl tt |<br>eeBre OO es | | H i?— ay, (2 1] Ztgot} »<br>“Se SWE, ByBb l=ALS |Tlactge] | | _Beg _8as<br>(7.87)34-.03+.00 tot ir| 2184653) ; ais) ii: ~~ “<br>naa 2 . +470(29.71) or aor11.09 P my 111ar moth aontiom|<br>tab with 6-S2UNC-2 * 085 005 a8 aed ff} t<br>thread PI (1.650.127)8 &3° | 415 1525Max. »| Syue<br>(10.54) (38.73) =<br>Dust CoverModel 157-2 P ibyTF —>r .234(5.904)Dia. 875375 (9.525) (9.525) Model 157-4<br>y- | 085 MAX.<br>| q (2.159)<br>u 437 .032<br>UT . TT) Honor jo f va f/1<br>Inches Nex. 4.525 t .156 —>) 187<br>(Millimeters) (35.56) (88.78)Max. 8&°@ (3.96) 6-82 UNC-2A thread(4.74)<br>**----- End of picture text -----**<br>


16 

Libertyville IL (847) 680-7400 FAX (847) 680-8169    www.ciitech.com 

**TYPE 157** 

## **TERMINALS** 

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Solder/Plug In .187 Quick Connect Printed Ciruit Terminal<br>187.002<br>4.75.05) .020.002<br>.187.002 078.005 (.51.05)<br>(4.78.08) (1.98.13) 047<br>~ ” (1.19)<br>tt 020 156<br>.250.005 (.051) (3.96)<br>(6.35.13) f<br>’ oe 300<br>(1.98) -<br>.280 Ref, (3.18.13).125.005 |<br>(7.11)<br>Inches Mates with .187” UL standard quick connect Printed Circuit Terminal For direct relay<br>(Millimeters) ternimal also suitable for solder connection. to PCB mounting. Model 157-9<br>Model 157-1,-2,-3,-4<br>WIRING<br>2 1 3 1 2 3<br>7 7 9 7 8 9<br>1 Form C (SPDT) 2 Form C (DPDT) 3 Form C (3PDT)<br>Reference Only<br>**----- End of picture text -----**<br>


## **PCB LAYOUT** 

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Bottom View<br>Reference Only<br>**----- End of picture text -----**<br>


**See RELAY SOCKETS on page 51. See HOLD DOWN SPRINGS on page 53.** 

17 

Libertyville IL (847) 680-7400 FAX (847) 680-8169    www.ciitech.com