4JRB 4

4JRB-4

4JRB-4 Space & MIL-Spec Relay

The relay is specially developed for China’s satellites which has a long-term service for all types of machines. It has mature technology, large design margin, high reliability and can be used in various military electronic and electrical equipment switching circuits and transmission signals. It has been widely used in aerospace, aviation, weapons, and electronics areas.

Category: Magnetic Latching Relay

Description

4JRB-4 Miniature Magnetic Latching Relays

Environmental Characteristics

No	Parameter		Environmental Specification
1	Quality Grade		Ⓙ, (G)
			II	IV
2	Temperature Range	(℃)	-55~85
3	Relative Humidity		(40±2) ℃, 90%~95%
4	Low Pressure	(kPa)	0.67~0.13
5	Sinusoidal Vibration	(Hz)	10~2000
		(m/s²)	147	196
6	Random Vibration	((m/s²)²/Hz)	–
7	Shock	(m/s²)	490	735
8	Constant Acceleration	(m/s²)	490	735

Main Characteristics

Contact Arrangement		4PDT	Operating Time (ms)		≤15
Coil Power(W)		≤0.64	Release Time (ms)		–
Leak Rate (Pa.cm³/s)		≤1×10^-2	Load Ratings	Resistive	3A,28Vd.c.
Contact Resistance (Ω)	Initial	≤0.05
	After Life	≤0.1	Life Time (Cycles)		1×10⁴
Insulation Resistance (MΩ)	Normal	≥500(500Vd.c.)	Overload Rating		Resistive,6A,28Vd.c. 100 cycles
	High Temp./ Humidity	≥10(500Vd.c.)
Dielectric Strength (50Hz)	Normal	500 Vr.m.s	Weight(g)		≤32
	Low pressure	200 Vr.m.s

Electrical Specification

(The values in parentheses in the table are G grade product)

Coil Voltage	25℃			Overall Temperature Range
Normal	Coil resistance (Ω) (1±10%) Ω	Operating voltage (max)	Release Voltage (min)	Operating voltage (max)	Release Voltage (min)
12	225	8.0	–	10.5	–
20	625	13.0	–	18.0	–
28	1350	18.0	–	24.0	–

Dimensions

Mounting Style B(3)	Mounting Style C (2)	Mounting Style A(0)
Note: Vibration sensitive direction: Horizontal

Circuit Diagram	Resistive Load Diagram

Order Mark

G and J grade product：

Example: (J)4JRB-4/II 28 C

4JRB-4	/	II	28	C
Product number		Environmental rating	Coil voltage	Mounting style