CII FC-325 SERIES RELAYS
HERMETICALLY SEALED, NON-LATCHING 25-AMP RELAYS
FEATURING DOUBLE MAKE/BREAK CONTACT DESIGN, ALL
WELDED ENCLOSURE, AND MS27418 QUALIFICATION. COMMERICAL
VERSIONS WITH 2A SPDT AUXILIARY CONTACT ALSO AVAILABLE.
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.
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
RUGGED
• Hermetically sealed
• Corrosion protected metal can
•A
ll welded construction.
No solder sealing
SPACE AND WEIGHT SAVING
• Dielectric Strength at 80,000 ft (25,000 m): 500 Vrms (all points)
• 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.
• 1.5 inch cube enclosure
OPERATIONAL
• 0.452 lbs
• Operate Time at Nominal Voltage:
CAPABLE
•E
xcellent for switching harsh
inductive, motor, and lamp loads
• -70°C to +125°C temperature range
• 80,000 feet altitude rating
AC: 25 ms max.
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
•S
older hook or terminal block
configurations
QUALIFIED
• Qualified to MS27418 specifications
•H
igher 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
PAGE 3
CII FC-325 Series Relays
Coil Characteristics
AC Coil
115 Vac
122 Vac
95 Vac
DC Coil
28 Vdc
32 Vdc
18 Vdc
108 Vac
22.5 Vdc
Drop-Out Voltage at +125° C (Amps Max)
5.0 Vac
1.5 Vdc
Coil Current at +25° C
.06 A @ 50/60 Hz
0.055 A @ 400 Hz
—
DC Coil Resistance (±10%)
—
160 Ω
Back EMF Suppresses to (Vdc)
(Suppressed Versions)
—
42 Vdc
Circuit Diagram C
(DC Nonsuppressed and AC Coils
with Aux)
Circuit Diagram D
(DC Suppressed Coils
with Aux)
Nominal Operating Voltage
Maximum Operating Voltage
Maximum Pick-Up Voltage at +125° C
Maximum Pick-Up Voltage at +125° C
(Continuous Current test)
Circuit Diagram
1.531 [38.89]
MAX
1.187 [30.15]
SEE DETAIL A
Ø.040 ± .002
[1.02 ± .05]
5 PLACES
SOLDER HOOK
TERMINALS
TINNED FINISH
1.531 1.187
[38.89] [30.15]
MAX
Ø.080 ± .002
[2.03 ± .05]
DC Nonsuppressed and AC
Coils
DC Suppressed Coils
6 PLACES SOLDER
Contact
HOOK TERMINALS
TINNED FINISH
Characteristics
Load Type
Life Cycles
Resistive
Inductive
Motor
Lamp
50,000
10,000
50,000
50,000
25
15
20
10
Mechanical Life,
Reduced Current
200,000
6.3
Current Rating (A)
115 Vac, 1 Phase Power
115/200 Vac, 3 Phase Power
400 Hz
50/60 Hz
400 Hz
50/60 Hz
25
25
25
25
25
25
25
25
20
12
20
12
10
10
10
10
28 Vdc
6.3
6.3
6.3
6.3
Part Numbers (Standard Version)
Coil
28 Vdc
28 Vdc
(Suppressed)
115 Vac,
50/60 Hz
115 Vac,
400 Hz
Terminal
Solder Hook
Screw
Solder Hook
Screw
Solder Hook
Screw
Solder Hook
Screw
Mounting
Stud
Bracket
Stud
Bracket
Stud
Bracket
Stud
Bracket
Mil Spec
MS27418-1B
MS27418-2B
MS27418-1D
MS27418-2D
MS27418-1C
MS27418-2C
MS27418-1A
MS27418-2A
MS Part No.
FC-325-2
FC-325-5
FC-325-7
FC-325-8
FC-325-3
FC-325-6
FC-325-1
FC-325-4
Comml Part No.
FC-325-CW3
FC-325-SY3
FC-325-CW4
FC-325-SY4
FC-325-CW9
FC-325-SY9
FC-325-CW8
FC-325-SY8
Custom configurations are available. Consult TE.
Part Numbers (With 2A 28VDC SPDT Auxiliary Contact)
Coil
28 Vdc
28 Vdc (Suppressed)
115 Vac, 50/60 Hz
115 Vac, 400 Hz
Terminal
Solder Hook
Solder Hook
Solder Hook
Solder Hook
Mounting
Stud
Stud
Stud
Stud
AEROSPACE, DEFENSE & MARINE /// FC-325 SERIES RELAYS
Comml Part No.
FCC-325-CW3
FCC-325-CW4
FCC-325-CW9
FCC-325-CW8
PAGE 4
CII FC-325 Series Relays
NAME PLATE
Dimensions
Solder Hook Terminals
NAME PLATE
1.680
MAX
(Shown with Mounting Studs)
1.680
MAX
+.032
.375 -.000
.38
+.03
.38
+.03
+.032
.375 -.000
.138-32 UNC-2A
.080 +.002 DIA. 6
STUD, 4 EA REQ'D
SOLDER HOOK TERMINALS
.138-32 UNC-2A
.080
+.002
DIA.
6
TINNED FINISH.
STUD, 4 EA REQ'D
SOLDER HOOK TERMINALS
TINNED FINISH.
1.187
+.005
Mounting Layout
.593
.593
+ .005 DIA
0.152 - .001
4 PLS
SEE DETAIL A
1.187
+.005
.593
+ .005 DIA
0.152 - .001
4 PLS
1.531 [38.89]
MAX
1.187 [30.15]
1.187
1.187
+.005
1.406 DIA.
+.005
.593
1.187
+.005
.040 +.002 DIA 2 COIL
SOLDER HOOK TERMINALS
.040 +.002 DIA 2 COIL 1.187
TINNED FINISH.
SOLDER HOOK TERMINALS
TINNED FINISH.
1.531
MAX
1.406 DIA.
+.005
STANDARD
VERSION
1.531
MAX
1.531 1.187
[38.89] [30.15]
MAX
1.187 1.531
MAX
1.187
1.531
MAX
Ø.040 ± .002
[1.02 ± .05]
5 PLACES
SOLDER HOOK
TERMINALS
TINNED FINISH
Ø.080 ± .002
[2.03 ± .05]
6 PLACES SOLDER
HOOK TERMINALS
TINNED FINISH
(WITH 2A SPDT
AUXILIARY VERSION)
Screw Terminals
(Shown with Mounting Bracket)
1.531
MAX
NAME PLATE
.04 TYP.
2.41
±.06
1.12
±.03
.173+.005 DIA
4 PLS
1.465
MAX
Mounting Layout
.244
1.062
±.005
.093 R
MAX
2.500
MAX
.225
1.550
.187+.005 DIA.
4 PLS
SCREW 6-32 UNC-2B, 250 LONG, 2 EACH
REQ. LOCKWASHER, NO.6, 2 EACH REQ.
2.000
2.000
+.005
1.50 SQ.
+.031
1.062
SCREW 8-32 UNC-2B, 250 LONG, 6
EACH REQ. LOCKWASHER, NO.8, 6
EACH REQ.
1.550
Tolerances are ±.010 unless otherwise noted.
AEROSPACE, DEFENSE & MARINE /// FC-325 SERIES RELAYS
PAGE 5
Connect With Us
We make it easy to connect with our experts and are ready to provide all the support you need.
Visit te.com/support to chat with a Product Information Specialist.
te.com/fc325
AMP, AGASTAT, CII, DEUTSCH, HARTMAN, KILOVAC, MICRODOT, NANONICS, POLAMCO, Raychem, SEACON, TE, TE
Connectivity, and TE connectivity (logo) are trademarks. All other logos, products and/or company names referred
to herein might be trademarks of their respective owners.
The information given herein, including drawings, illustrations and schematics which are intended for illustration
purposes only, is believed to be reliable. However, TE Connectivity makes no warranties as to its accuracy or completeness and disclaims any liability in connection with its use. TE Connectivity‘s obligations shall only be
as set forth in TE Connectivity‘s Standard Terms and Conditions of Sale for this product and in no case will
TE Connectivity be liable for any incidental, indirect or consequential damages arising out of the sale, resale,
use or misuse of the product. Users of TE Connectivity products should make their own evaluation to determine
the suitability of each such product for the specific application.
© 2020 TE Connectivity All Rights Reserved.
1-1773871-3
08/20
AEROSPACE, DEFENSE & MARINE /// FC-325 SERIES RELAYS
CII FC-325 SERIES RELAYS
TE Connectivity
Aerospace, Defense & Marine
2900 Fulling Mill Road
Middletown, PA 17057