Leach International is the world's largest manufacturer of relays, contactors, pressure switches, and aerospace and aircraft switches -- many specifically designed for severe environments.

Relays

Military qualified subminiature and half-crystal can relays for both commercial and military applications. Low level to 75 Amp. AC, DC. Suitable for severe environments.

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Contactors

High power contactors for primary power control. From 25 to 1000 amps. Includes Smart and busbar mount contactors for modern electrical power distribution systems.

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Control Devices

For timing purposes, sensing and protection of current, voltage, frequency, and phase; fixed, adjustable AC and DC versions.

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Sockets

Features a wide variety of sockets used for Leach relays, time delays and rail devices including PC board mount, solder, crimp, and track mount styles.

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Individual product sections are available in the table below.

Leach Condensed Catalog
Leach QPL Listing

Relays & Contactors

Amps	Series		Description			Mil-Specification
0.5A	065*D		RELAY NONLATCH, 2PDT, 0.5A@28VDC
0.5A	065*I		RELAY LATCH, 2PDT, 0.5A@28VDC
1A	D		RELAY LATCH, 2PDT, 1A@28VDC
1A	E		RELAY NONLATCH, 2PDT, 1A@28VDC
2A	GP2/GP2A		RELAY LATCH, 2PDT, 2A@28VDC
2A	GP250		RELAY LATCH, 2PDT, 2A@50VDC
2A	GP4		RELAY LATCH, 4PDT, 2A@28VDC
2A	F250		RELAY NONLATCH, 2PDT, 2A@28VDC
2A	GP5		RELAY NONLATCH, 2PDT, 2A@28VDC
2A	W260		RELAY NONLATCH, 2PDT, 2A@28VDC			M39016/6
2A	WN460		RELAY NONLATCH, 4PDT, 2A@28VDC
5A	XL		RELAY LATCH, 2PDT, 5A@28VDC			M6106/38
5A	YL		RELAY LATCH, 4PDT, 5A@28VDC			M6106/39
5A	X		RELAY NONLATCH, 2PDT, 5A@28VDC			M83536/1, /2, DSCC# 84133-XXX
5A	XA		RELAY NONLATCH, 2PDT, 5A@28VDC
5A	Y		RELAY NONLATCH, 4PDT, 5A@28VDC			M83536/5, /6, DSCC# 86087-XXX
5A	YA		RELAY NONLATCH, 4PDT, 5A@28VDC
10A	XCL		RELAY LATCH, 1PDT, 10A@28VDC
10A	YCL		RELAY LATCH, 3PDT, 10A@28VDC			M6106/40
10A	JS/JSA		RELAY NONLATCH, 1PDT, 10A@28VDC
10A	XC		RELAY NONLATCH, 1PDT, 10A@28VDC
10A	9330		RELAY NONLATCH, 2PDT, 10A@28VDC			MS24149,
10A	JA		RELAY NONLATCH, 2PDT, 10A@28VDC			M83536/11
10A	YC		RELAY NONLATCH, 3PDT, 10A@28VDC			M83536/21, /22
10A	YCA		RELAY NONLATCH, 3PDT, 10A@28VDC
10A	KA		RELAY NONLATCH, 4PDT, 10A@28VDC			M83536/17
10A	F600		RELAY NONLATCH, 6PDT, 10A@28VDC
10A	F601		RELAY NONLATCH, 6PDT, 10A@28VDC
12A	JL		RELAY LATCH, 2PDT, 12A@28VDC			M83536/12, /13
12A	KL		RELAY LATCH, 4PDT, 12A@28VDC			M83536/18, /19
12A	J		RELAY NONLATCH, 2PDT, 12A@28VDC			M83536/9, /10
12A	K		RELAY NONLATCH, 4PDT, 12A@28VDC			M83536/15, /16, MS27709
15A	9274		RELAY LATCH, 4PDT, 15A@28VDC			MS24568
25A	JCL		RELAY LATCH, 1PDT, 25A@28VDC			M6106/20
25A	KCL		RELAY LATCH, 3PDT, 25A@28VDC			MS27742
25A	KDL		RELAY LATCH, 3PST/NO+AUX, 25A@28VDC			M6106/12
25A	JC AND JCA		RELAY NONLATCH, 1PDT, 25A@28VDC			M6106/19, M83536,36, /37
25A	KC		RELAY NONLATCH, 3PDT, 25A@28VDC			M83536/32, /33
25A	KCA		RELAY NONLATCH, 3PDT, 25A@28VDC-AC COIL
25A	9325		RELAY NONLATCH, 3PDT/CO, 25A@28VDC			MS27706
25A	KD		RELAY NONLATCH, 3PST/NO+AUX, 25A@28VDC			M6106/13
25A	KDA		RELAY NONLATCH, 3PST/NO+AUX, 25A@28VDC			M6106/13
25A	9324		RELAY NONLATCH, 3PST/NO, 25A@28VDC			MS27418
25A	9339		RELAY NONLATCH, 3PST/NO, 1PDT+AUX, 25A@28VDC			M6106/41
25A	9123		CONTACTOR NONLATCH, 3PST DM, 25A@28VDC			MS27997
50A	KM		RELAY NONLATCH, 1PST DM, 50A@28VDC
50A	HB		CONTACTOR BUSBAR, 50A@115VAC/400HZ
50A	HC,HCD,HCP		CONTACTOR CENTER OFF, 50A@115VAC/400HZ			MS27750
50A	9125		CONTACTOR NONLATCH INTERLOCK, (3PST DM CO)X2,
50A	7064-4653		CONTACTOR NONLATCH, 1PST DM, 50A@28VDC			MS24166-D1
50A	7064-238		CONTACTOR NONLATCH, 1PST NO, 50A@28VDC			MS24166-D2
50A	9124		CONTACTOR NONLATCH, 3PST DM, 50A@28VDC			MS27222
55A	7064-4656		CONTACTOR NONLATCH, 2PST DM, 55A@28VDC			MS24178-D1
60A	HL,HLT, HLD,HLP		CONTACTOR LATCH, 60A@115VAC/400HZ			MS27749
60A	H,HD,HP, HT,HDT,HPT		CONTACTOR NONLATCH, 60A@115VAC/400HZ			MS27751, M6106/26, M6106/43
60A	ZE-X9YN		SMART PLUG-IN CONTACTOR, NONLATCH, 3PST 60A@115VAC/400HZ
75A	KXL		RELAY LATCH, 1PST/NO DB, 75A@28VDC
75A	KX		RELAY NONLATCH, 1PST/NO DB, 75A@28VDC
75A	KXD		RELAY NONLATCH, 1PST/NO DB+AUX, 75A@28VDC
80A	77		CONTACTOR NONLATCH, 1PST DM, 80A@28VDC
90A	LC		CONTACTOR CENTER OFF, 90A@115VAC/400HZ
90A	L		CONTACTOR NONLATCH, 90A@115VAC/400HZ
100A	Z-X9YN		PLUG-IN CONTACTOR, NONLATCH, 3PDT 100A@115VAC/400HZ
100A	ZC, ZCD		CONTACTOR CENTER OFF, 100A@115VAC/400HZ
100A	9207		CONTACTOR NONLATCH, 100A@28VDC			DSCC# 84192-XXX
100A	9213		CONTACTOR NONLATCH, 3PST DM, 100A@28VDC
100A	A270-100		CONTACTOR, 270VDC, 1PST DM, 100A@270VDC
120A	ZL, ZLD		CONTACTOR LATCH, 120A@115VAC/400HZ
120A	Z, ZD		CONTACTOR NONLATCH, 120A@115VAC/400HZ
125A	129		CONTACTOR NONLATCH, 1PST DB-DM+AUX, 125A@28VDC
145A	ZG		CONTACTOR NONLATCH, 145A@115VAC/400HZ
175A	WE-X2YN		SMART PLUG-IN CONTACTOR, NONLATCH, 175A@115VAC/400HZ
180A	ZJ		CONTACTOR NONLATCH, 180A@115VAC/400HZ
200A	CC02**P		BUS BAR CONTACTOR 1PST DM+AUX, 200A@28VDC
200A	219		CONTACTOR NONLATCH, 1PST DB+AUX, 200A@28VDC
200A	7264-4654		CONTACTOR NONLATCH, 1PST DM, 200A@28VDC			MS24171-D1
200A	7264-283		CONTACTOR NONLATCH, 1PST NO, 200A@28VDC			MS24171-D2
200A	7264-4655		CONTACTOR NONLATCH, 1PST NO, 200A@28VDC			MS24172-D1
250A	WC		CONTACTOR CENTER OFF, 250A@15VAC/400HZ
275A	WB		CONTACTOR BUSBAR, 275A@115VAC/400HZ
275A	WL		CONTACTOR LATCH, 275A@115VAC/400HZ
275A	W		CONTACTOR LATCH, 275A@115VAC/400HZ
275A	W-X9YN		PLUG-IN CONTACTOR, NONLATCH, 275A@115VAC/400HZ
385A	WL-X9YN		PLUG-IN CONTACTOR, LATCH, 385A@115VAC/400HZ
400A	CC04**P		BUS BAR CONTACTOR, 1PST DM+AUX, 400A@28VDC
400A	52040		CONTACTOR CIRCUIT BREAKER, 1PST DM+AUX, 400A@28VDC
400A	7401-4658		CONTACTOR NONLATCH, 1PST DM, 400A@28VDC			MS24185-D1
400A	7401-C		CONTACTOR NONLATCH, 1PST NO, 400A@28VDC			MS24185-D2
400A	AJ		CONTACTOR NONLATCH, 1PST DM, 400A@28VDC			M6106/33
400A	CC0519P		CONTACTOR NONLATCH, 1PST DB+AUX, 500A@28VDC
500A	507		CONTACTOR NONLATCH, 1PST DM, 500A@28VDC
700A	M 707		CONTACTOR NONLATCH, 1PST DM, 700A@28VDC

Control Devices

Series	Description		Mil-Specification
V310	SENSOR, AC OVERVOLTAGE, 2PDT OR 4PDT, 10A@28VDC
P510	SENSOR, AC PHASE SEQUENCE, 2PDT OR 4PDT, 10A@28VDC
V610	SENSOR, AC POWER MONITOR, 2PDT OR 4PDT, 10A@28VDC
V210	SENSOR, AC UNDER VOLTAGE, 2PDT OR 4PDT, 10A@28VDC
V710	SENSOR, AC VOLTAGE, 2PDT, 3PDT OR 4PDT, 10A@28VDC
CS400	SENSOR, CURRENT, 2PDT, 2A@28VDC
CS500	SENSOR, CURRENT, 2PDT, 2A@28VDC
V110	SENSOR, DC VOLTAGE, 2PDT OR 4PDT, 10A@28VDC
F410	SENSOR, FREQUENCY, 2PDT OR 4PDT, 10A@28VDC
CSHM	SENSOR, HALL EFFECT FOR CURRENT MEASUREMENT
CSHPB	SENSOR, HALL EFFECT FOR BATTERY BUS DIRECT AND RETURN PROTECTION
CSHP	SENSOR, HALL EFFECT FOR RCCB OPERATION
VS400	SENSOR, UNDERVOLTAGE, 2PDT, 2A@28VDC
TD-1436	TIME DELAY ON OPERATE ADJ, 1PST, 0.25A@28VDC		M83726/21
TDH-6060/6061	TIME DELAY ON OPERATE ADJ, 2PDT, 10A@28VDC
TDH-8060/8061	TIME DELAY ON OPERATE ADJ, 2PDT, 10A@28VDC		M83726/30
TDH-7060/7061	TIME DELAY ON OPERATE ADJI 4PDT, 10A@28VDC
TDH-1609	TIME DELAY ON OPERATE FIXED, 1PNO(SSO), 0.15A@28VDC		M83726/24
TD-1435	TIME DELAY ON OPERATE FIXED, 1PST, 0.25A@28VDC		M83726/20
TDH-6050/6051	TIME DELAY ON OPERATE FIXED, 2PDT, 10A@28VDC
TDH-8050/8051	TIME DELAY ON OPERATE FIXED, 2PDT, 10A@28VDC		M83726/28
TDH-7050/7051	TIME DELAY ON OPERATE FIXED, 4PDT, 10A@28VDC
T531	TIME DELAY ON OPERATE/RELEASE, FIXED/ADJ, 3PDT, 25A@28VDC
TDH-8080/8081	TIME DELAY ON RELEASE ADJ, 2PDT, 10A@28VDC		M83726/31
TDH-1610	TIME DELAY ON RELEASE FIXED, 1PNO(SSO), 0.15A@28VDC		M83726/25
TDH-6070/6071	TIME DELAY ON RELEASE FIXED, 2PDT, 10A@28VDC
TDH-8070/8071	TIME DELAY ON RELEASE FIXED, 2PDT, 10A@28VDC		M83726/29
TDH-7070/7071	TIME DELAY ON RELEASE FIXED, 4PDT, 10A@28VDC
FLSH402	TIME DELAY PROGRAMMABLE TIME/FUNCTION, 2PST(SSO), 0.25A@28VDC
TD-1412	TIME DELAY REPEAT CYCLE TIMER, 1PST, 0.25A@28VDC		M83726/22

Application Notes

Note Number	Application Notes
1	CORRECTION DUE TO COIL COPPER WIRE RESISTANCE CHANGE IN TEMPERATURE
2	LIFE CAPABILITY VERSUS VOLTAGE: RELAY SERIES F/M30*, 40*, 60*
3	LIFE CAPABILITY VERSUS VOLTAGE: RELAY SERIES F370, F470, F670
4	LIFE CAPABILITY VERSUS VOLTAGE: RELAY SERIES FD370, FD470, FD670
6	RELAY WITH ATTRACT AND HOLD COIL
7	SUPPRESSOR DEVICES FOR RELAY COILS
8	LIFE CAPABILITY VERSUS VOLTAGE: RELAY SERIES F257
9	LIFE CAPABILITY VERSUS VOLTAGE: RELAY SERIES 144
101	DERATING OF CONTACTS FOR DC VOLTAGES ABOVE NOMINAL RATING
102	RELAYS AND TEMPERATURE VARIATIONS
103A	CURVES FOR DC VOLTAGES ABOVE NORMAL RATING: RESISTIVE LOAD ONLY: 5A
103B	CURVES FOR DC VOLTAGES ABOVE NORMAL RATING: RESISTIVE LOAD ONLY: 10A
103D	CURVES FOR DC VOLTAGES ABOVE NORMAL RATING: RESISTIVE LOAD ONLY: 5A/10A
103E	CURVES FOR DC VOLTAGES ABOVE NORMAL RATING:RESISTIVE LOAD ONLY: 25A
103F	CURVES FOR DC VOLTAGES ABOVE NORMAL RATING:RESISTIVE LOAD ONLY: 20A/25A/50A
103G	CURVES FOR DC VOLTAGES ABOVE NORMAL RATING: RESISTIVE LOAD ONLY: 100A/200A/300A/400A
104	SMART CONTACTORS

Relay Sockets

Series	Description
HRCW	SOCKET TO SOLDER FOR F250, F257, W260, WB260, 144
S600, S601	SOCKET TO CRIMP FOR F600 AND F601
SM-1000-003	SOCKET TRACK MOUNT FOR X, TDH-1609 AND TDH-1610
SM-1001-003	SOCKET TRACK MOUNT FOR YC
SM-1002-003	SOCKET TRACK MOUNT FOR Y
SO-1021-7127/7126	SOCKET TO SOLDER FOR V110, V210, V310, V710, F410 AND P510
SO-1048-8308/8518	SOCKET TO CRIMP FOR K, TDH-8050, TDH-8060, TDH-8070, TDH-8080 AND VS400
SO-1048-8776/8779	SOCKET TO CRIMP FOR KA AND CS400
SO-1049-8309/8987	SOCKET TO CRIMP FOR J
SO-1049-8772/8774	SOCKET TO CRIMP FOR JA
SO-1055-8690-10147	SOCKET TO CRIMP FOR JL, TDH-6050, TDH-6060 AND TDH-6070
SO-1056-8691	SOCKET TO CRIMP FOR KL, TDH-7050, TDH-7060, AND TDH-7070
SO-1057-8912	SOCKET TO CRIMP FOR KC
SO-1058-8913	SOCKET TO CRIMP FOR KCL
SO-1059-8914	SOCKET TO CRIMP FOR KD
SO-1060-8915	SOCKET TO CRIMP FOR KDL
SO-1061-8916	SOCKET TO CRIMP FOR KDA
SO-1062-8917	SOCKET TO CRIMP FOR KCA
SO-1063-9033/9034	SOCKET TO CRIMP FOR JS/JSA AND JC/JCA
SO-1063-9036	SOCKET TO CRIMP FOR JCL
SO-1064-001	SOCKET TO CRIMP FOR X
SO-1064-003	SOCKET TO CRIMP FOR XL
SO-1064-10425	SOCKET TO CRIMP FOR XC
SO-1064-10444/10445	SOCKET TO CRIMP FOR XA
SO-1064-10534	SOCKET TO CRIMP FOR XCL
SO-1065-001	SOCKET TO CRIMP FOR YC
SO-1065-003	SOCKET TO CRIMP FOR YCL
SO-1065-10392/10393	SOCKET TO CRIMP FOR YCA
SO-1066-001	SOCKET TO CRIMP FOR Y
SO-1066-003	SOCKET TO CRIMP FOR YL
SO-1066-10385/10386	SOCKET TO CRIMP FOR YA
SO9005	SOCKET PCB FOR F250, F257, W260 AND WB260
SO-SSL	SOCKET SNAP AND LOCK FOR J, JA, K, KA, KL AND TDX
MT-3000-003	RELAY SOCKET TRACK FOR ALL SM SERIES SOCKETS