T-Bar | Relays | Switches

T-Bar's goal
is to provide quality, on-time deliveries while working with customers beginning with a design concept or servicing them through off the shelf inventory.

Product Overview

Dust Tight Relays

Environmentally Sealed Relays

Hermetically Sealed Relays

Dust Tight Toggle Switches

Environmentally Sealed Toggle Switches

PushButton Switches

Connectors & Tools

Custom

Relays & Switches to switch more circuits reliably in less space.

Specifications /

General

'A mutipole, solenoid actuated relay in dust-tight enclosures (Series 801/901 807/907), environmentally sealed enclosure (Series 831/931 837/937), or hermetically sealed enclosure (Series 881/981 887/987).

Mechanical Life: @ 20 CPM

Weight: Typically (Add 3 oz/ 84 gms for latching units).

Poles		801/901		831/931		881/981
		oz.	gms	oz.	gms	oz.	gms
	12	4.5	127	10	283	17	481
	24	7	198	13	368	22	623
	36	7.5	212	15	425	23	652
52	62	9	255	18	510	24	680

Insulation Resistance:
MIL-STD-202 Method 302, Condition B (500 VDC). 5,000 megohms between all insulated points. 50,000 megohms available special order.

Dialectric Withstanding Voltage:
MIL-STD-202 Method 301: 1000 Volts RMS, 60 cycle AC, between all insulated points. 1500 volt available on special order.

Environmental Specifications:
Ambient Temperature: '-55°C to + 85°C

Vibration: .06" DA 1- to 55 CPS. No physical damage. Refer to factory for other values.

Shock: 50G peak saw tooth. No physical damage. Refer to factory for other values.

Sealing: 831/931 series MIL-R-5757E, Para. 4.8.4.1 881/981 series MIL-R-5757D, Para. 4.7.2.3, Test III for MIL-R-5757E, refer to factory.

Moisture Resistance: MIL-R-5757E, 4.8.19

Salt Spray: Series 831/931 and 881/981. MIL-R-5757E, Para. 4.8.13.

Contacts

Configurations Available:
Dust Tight & Environmentally Sealed

Number of Poles:		Form Number:
4, 8, 12, 24, 36		A, B, C, or D
48 & 52		A, B, or C
60		A

Hermetically Sealed
24, 36, 48 or 51		A
24, 34		C

Form Description:
A=Normally open
B=Normaly closed
C=Double throw break before make
D=Double throw break before break

Contact Material:
800 Series: Fine silver gold plated 50 millionths min.
(bright finish).
900 Series: Movable contact (common). Fine silver button with gold plated diffusion bond. 5 millionths rhodium plate, gold, 80 millionths min. Bright finish. Fixed contact (N.C.& N.O.) bifurcated: gold plated 2000 millionths min.

Contact Ratings (Typical):
800 Series: General purpose 5 amp, 28 VDC resistive, switched. 5 amp 120 VAC 60 Hz resistive.
900 Series: Microvolts dry circuit 1 amp, 28 VDC resistive, 1/8 amp 120 VAC 60 Hz resistive, 2 amp, 120 VAC carry only (for higher refer to factory)

Contact Life (Resistive) (at 20 CPM):
800 Series: Minimum current, i.e. 100 ma @ 10 VDC: 5,000,000 cycles. High level, i.e. 5 amp @ 28 VDC: 100,000 cycles
900 Series: Low level 1.e. 10 ma @30 MV: 20,000,000 cycles. High Level i.e. 1 amp @ 28 VDC: 100,000 cycles.

Static Contact Resistance at Rated Voltage:
800 Series: Max. before/after life: (MIL-R5757E) Minimum current: 50 milliohms/1 ohm High level (5A @ 28 VDC): 20/40 milliohms.
900 Series: Max. before/after life: (MIL-R-5757E), Low Level 10/20 milliohms. High level 20/40 milliohms.

Overload: Twice max. rating for 100 cycles.

Thermal Offset: Less than 0.1 micro V @ room temperature and less than 0.1 micro V/ for series 801/901 and 831/931. Refer to factory for 881/981.

Terminals:
Standard: Gold plate 30 millionths thick. Mates with T-Bar Connector P/N 88601-G76 for 801/901 or P/N 88631-G76 for 831/931. For 881/981 see drawing.

Coil

Relays at 25°C (801, 901, 831, 931, 881, 981)
	Poles	Form	Poles	Forms	Poles	Forms	Poles	Forms
Coil	12	A,B,C	24	A,B,C	48	A	60&72	A
	4		12	D	36	A,B,C	52	A,C
Voltage	8				24	D	48	B,C
							36	D

	3 Watts		3.5 Watts		5.25 Watts		6.6 Watts
	Res.	1(ma)	Res.	1(ma)	Res.	1(ma)	Res.	1(ma)
	±10%		±10%		±10%		±10%

DC
6	12	500	11	545	7	857	5.5	1090
12	49	245	45	267	28	429	22	545
24	193	125	174	128	111	216	94	255
28	258	109	227	123	150	187	120	233
48	778	62	674	71	438	110	350	137
110	3963	28	3450	32	2355	47	1930	57

AC	Impd.	rms.	Impd.	rms.	Impd.	rms.	Impd.	rms.
115VAC	4107	28	3594	32	2500	46	2018	57

Operate (pull-in) at less than 80% of nominal coil voltage. Release (drop out) at greater than 10% of nominal coil voltage. Operate continuously at 120% of nominal coil voltage.

Operate Time
4,8 or 12 poles		15 ms max.
24 poles		25 ms max.
36 poles		30 ms max.
48 poles		35 ms max.
52 or 60 poles		45 ms max.
Note: Coil suppression causes negligible change in operate time. Release Time 5 ms typical-Diode coil suppression can increase release time by a multiple of 7. Contact Bounce 2 ms typical for normally open contacts 6 ms typical for normally closed contacts

Magnetic Latching Relays (807, 907, 837, 937, 887, 987)

	Standard		Bifilar (-F)
	All Configureations		All Configureations
	6 Watts		10 Watts/Coil
	Res.	1(ma)	Res.	1(ma)

6	6	1000	3.6	1667
12	24	500	14.4	833
24	96	250	58	414
28	132	212	78	359
48	390	123	230	209
110	2000	55	1210	91

.
Operate (pull-in) at less than 80% of nominal coil voltage. Release (drop out) at greater than 10% of nominal coil voltage. Operate continuously at 120% of nominal coil voltage.

Operate Time
4,8 or 12 poles		15 ms max.
24 poles		25 ms max.
36 poles		30 ms max.
48 poles		35 ms max.
52 or 60 poles		45 ms max.
Latch or Unlatchat less than 80% of nominal coil voltage with 50 ms pulse. Zener or varistor suppression of standard latching coils causes negligible change in latch or unlatch time. Diode suppression bifilar of (-F-S) coils may increase latch or unlatch time. Contact bounce 4 ms typical during contact closure. All coil terminals: Solder tab to accept two #22 AWG WIRES.