FC-325-SY8

## **CII** 

**FC-325 SERIES RELAYS** HERMETICALLY SEALED, NON-LATCHING 25-AMP RELAYS FEATURING DOUBLE MAKE/BREAK CONTACT DESIGN, ALL WELDED ENCLOSURE, AND MS27418 QUALIFICATION 

AEROSPACE, DEFENSE & MARINE /// FC-325 SERIES RELAYS 

**CII FC-325 SERIES RELAYS** Compact, Hermetically Sealed, Non-Latching Relays 

FC-325 Series relays from TE Connectivity (TE) are hermetically sealed devices designed for harsh inductive, motor, and lamp load applications in aerospace, defense, and marine markets. 

Configured as a 3PST/NO (DM), the double make/break contact design of the CII FC-325 Series relays offer higher capability than comparable relays in the market. It shares the load across two contact sets, resulting in less wear and tear on the relay. This provides stable performance and extends the relay’s life. The relay’s all welded design creates a reliable alternative to similar solder sealed relays in the market. 

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**CII FC-325 Series Relays** 

## **MECHANICAL/ENVIRONMENTAL** 

- **Temperature Range:** -70°C to +125°C 

- **Altitude:** 80,000 feet 

- **Sinusoidal Vibration:** 10 g/5 to 1000 Hz 

- **Shock:** 50 g/11 ms 

## **ELECTRICAL** 

- **Dielectric Strength at Sea Level: Coil to Case:** 1250 Vrms 

**All Other Points:** 1500 Vrms 

- **Dielectric Strength at 80,000 ft (25,000 m):** 500 Vrms (all points) 

## **RUGGED** 

- Hermetically sealed 

- Corrosion protected metal can 

- All welded construction. No solder sealing 

## **SPACE AND WEIGHT SAVING** 

- 1.5 inch cube enclosure 

- 0.452 lbs 

- **Insulation Resistance at 500 Vdc:** 

**Initial:** 100 MΩ min. 

**After Life or Environmental Test:** 50 MΩ  min. 

- **Contact Voltage Drop at Nominal Current: Initial Value:** 150 mV max. **After Life:** 175 mV max. 

## **OPERATIONAL** 

- **Operate Time at Nominal Voltage:** 

- **AC:** 25 ms max. 

## **CAPABLE** 

- Excellent for switching harsh inductive, motor, and lamp loads 

- -70°C to +125°C temperature range 

- 80,000 feet altitude rating 

- **DC:** 20 ms max. 

- **Release Time at Nominal Voltage:** 

- **AC:** 50 ms max. 

**DC:** 10 ms max. 

- **Bounce Time at Nominal Voltage:** 2 ms max. 

## **VERSATILE** 

- 28 Vdc or 115 Vac coils 

- Solder hook or terminal block configurations 

## **QUALIFIED** 

- Qualified to MS27418 specifications 

- Higher current ratings than standard M83536 mid-range relays 

## **APPLICATIONS** 

- Launch Systems 

- Power Distribution 

- Fuel Pumps 

- Guidance and Navigation Systems 

- Aircraft Galley/Cabin Equipment 

- Weapons Systems 

- Ground Support Equipment 

AEROSPACE, DEFENSE & MARINE /// FC-325 SERIES RELAYS 

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**CII FC-325 Series Relays** 

## **Coil Characteristics** 

|**Coil Characteristics**|**Coil Characteristics**|
|---|---|
|**AC Coil**<br>**DC Coil**||
|Nominal OperatingVoltage<br>115 Vac<br>28 Vdc||
|Maximum OperatingVoltage<br>122 Vac<br>32 Vdc||
|°<br>||
|Maximum Pick-UpVoltage at +125 C<br>95 Vac<br>18 Vdc||
|Maximum Pick-Up Voltage at +125° C<br>(Continuous Current test)<br>108 Vac<br>22.5 Vdc||
|Drop-Out Voltage at +125° C(Amps Max)<br>5.0 Vac<br>1.5 Vdc||
|Coil Current at +25° C<br>.06 A @ 50/60 Hz<br>0.55 A @ 400 Hz<br>—||
|DC Coil Resistance(±10%)<br>—<br>160 mΩ||
|Back EMF Suppresses to (Vdc)<br>(Suppressed Versions)<br>—<br>42 Vdc||



## **Circuit Diagram** 

**==> picture [87 x 80] intentionally omitted <==**

**==> picture [87 x 80] intentionally omitted <==**

DC Nonsuppressed and AC Coils 

DC Suppressed Coils 

## **Contact Characteristics** 

|**Contact Characteristics**|||
|---|---|---|
|**Load Type**<br>**Life Cycles**||**Current Rating (A)**|
||**28**<br>**Vdc**|**115 Vac, 1 Phase Power**<br>**115/200 Vac, 3 Phase Power**<br>**400 Hz**<br>**50/60 Hz**<br>**400 Hz**<br>**50/60 Hz**|
|Resistive<br>50,000|25|25<br>25<br>25<br>25|
|Inductive<br>10,000|15|25<br>25<br>25<br>25|
|Motor<br>50,000|20|20<br>12<br>20<br>12|
|Lamp<br>50,000|10|10<br>10<br>10<br>10|
|Mechanical Life,<br>Reduced Current<br>200,000|6.3|6.3<br>6.3<br>6.3<br>6.3|



## **Part Numbers** 

|**Part Numbers**||
|---|---|
|**Coil**|**Terminal**<br>**Mounting**<br>**Mil Spec**<br>**Comml Part No.**<br>**Part No.**|
|28 Vdc|Solder Hook<br>Stud<br>MS27418-1B<br>FC-325-CW3<br>FC-325-2|
||Screw<br>Bracket<br>MS27418-2B<br>FC-325-SY3<br>FC-325-5|
|28 Vdc<br>(Suppressed)|Solder Hook<br>Stud<br>MS27418-1D<br>FC-325-CW4<br>FC-325-7|
||Screw<br>Bracket<br>MS27418-2D<br>FC-325-SY4<br>FC-325-8|
|115 Vac,<br>50/60 Hz|Solder Hook<br>Stud<br>MS27418-1C<br>FC-325-CW9<br>FC-325-3|
||Screw<br>Bracket<br>MS27418-2C<br>FC-325-SY9<br>FC-325-6|
|115 Vac,<br>400 Hz|Solder Hook<br>Stud<br>MS27418-1A<br>FC-325-CW8<br>FC-325-1|
||Screw<br>Bracket<br>MS27418-2A<br>FC-325-SY8<br>FC-325-4|



Custom configurations are available. Consult TE. 

AEROSPACE, DEFENSE & MARINE /// FC-325 SERIES RELAYS 

PAGE 4 

## **CII FC-325 Series Relays** 

## **Dimensions Solder Hook Terminals** (Shown with Mounting Studs) 

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**----- Start of picture text -----**<br>
NAME PLATE<br> 1.680<br>MAX .38<br>+.03<br>+.032<br>.375 -.000<br>.080 +.002 DIA. 6  .138-32 UNC-2A<br>SOLDER HOOK TERMINALS  STUD, 4 EA REQ'D<br>TINNED FINISH.<br>**----- End of picture text -----**<br>


## Mounting Layout 

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1.187<br>+.005<br>.593<br>.593<br>1.187<br>+.005<br>     + .005 DIA<br>0.152  - .001<br>4 PLS 1.406 DIA.<br>+.005<br>**----- End of picture text -----**<br>


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1.187  1.531<br> MAX<br>.040 +.002 DIA  2 COIL<br>SOLDER HOOK TERMINALS<br>TINNED FINISH. 1.187<br> 1.531<br> MAX<br>**----- End of picture text -----**<br>


## **Screw Terminals** 

(Shown with Mounting Bracket) 

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**----- Start of picture text -----**<br>
 1.531<br>MAX<br>NAME PLATE<br>.04 TYP.<br> 2.41<br>±.06<br> 1.12<br>±.03<br> .173+.005 DIA  1.465<br>4 PLS MAX<br>SCREW 6-32 UNC-2B, 250 LONG, 2 EACH<br>REQ. LOCKWASHER, NO.6, 2 EACH REQ.<br>Mounting Layout<br>1.062<br>.244 ±.005<br> 2.500  2.000  1.50 SQ.<br>.093 R MAX +.031<br>.225<br>MAX<br>1.550 2.000<br>+.005 1.062 SCREW 8-32 UNC-2B, 250 LONG, 6EACH REQ. LOCKWASHER, NO.8, 6<br>EACH REQ.<br>.187+.005 DIA.<br>4 PLS 1.550<br>**----- End of picture text -----**<br>


Tolerances are ±.010 unless otherwise noted. 

AEROSPACE, DEFENSE & MARINE /// FC-325 SERIES RELAYS 

PAGE 5 

## LET’S CONNECT 

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## Technical Support 

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## te.com/fc325 

CII, TE, TE Connectivity and the TE connectivity (logo) are trademarks of the TE Connectivity Ltd. family of companies. Other products, logos, and company names mentioned herein may be trademarks of their respective owners. While TE has made every reasonable effort to ensure the accuracy of the information herein, nothing herein constitutes any guarantee that such information is error-free, or any other representation, warranty or guarantee that the information is accurate, correct, reliable or current. The TE entity issuing this publication reserves the right to make any adjustments to the information contained herein at any time without notice. All implied warranties regarding the information contained herein, including, but not limited to, any implied warranties of merchantability or fitness for a particular purpose are expressly disclaimed. The dimensions herein are for reference purposes only and are subject to change without notice. Specifications are subject to change without notice. Consult TE for the latest dimensions and design specifications. 

© 2016 TE Connectivity Ltd. family of companies All Rights Reserved. 

**1-1773871-3  04/16   Original** 

AEROSPACE, DEFENSE & MARINE /// FC-325 SERIES RELAYS