ZJ3-A series fast intermediate relayDetailed product description：

1 ZJ3-A series fast intermediate relay application

The ZJ3-A series fast intermediate relay is used in various protection and automatic control circuits for DC operation, as an outlet relay or to increase the number and capacity of protection and control circuit contacts.

Working principle and structure of ZJ3-A series fast intermediate relay

2.1 The relay is an electromagnetic fast acting intermediate relay, with a coil fixed to a U-shaped magnetic conductor, and an armature connected to a frame plate connected to the electromagnet by a shaft. When voltage is applied to both ends of the coil, the armature moves towards the closed position, and the contacts close or open with the movement of the insulating bracket connected to the armature.
2.2 Winding combination
2.2.1 ZJ3-1A and 2A relays have only one voltage winding;
2.2.2 ZJ3-3A relay has one voltage action winding and two current holding windings;
2.2.3 ZJ3-4A relay has one voltage winding and three current holding windings;
2.2.4 The ZJ3-5A relay has a voltage winding and a current winding, which can be voltage operated or current operated, and can also be current maintained or voltage maintained. When the connecting piece is located at terminals 5 and 6 (Q-type 5 and 7), it is for voltage maintenance; When located at terminals 4 and 5 (Q-type 3 and 5), it is for current holding and can be adjusted according to usage. The wiring of the connector is shown in Figure 1.
2.3 In order to reduce the power and temperature rise of the relay, additional resistors are connected in series in the voltage winding circuit of the relay.
2.4 Relays have two structures:
2.2.1 Protruding plug-in structure. Adopting Aji JK-1 type shell, its outline and opening diagram are shown inAppendix IThe internal wiring of the relay is shown in Figure 1.
2.4.2 Embedded plug-in structure (with/Q in the model). Using the Xuji A11K shell, its external shape and opening diagram are shown inAppendix IIThe internal wiring of the relay is shown in Figure 2.
If it is necessary to change the wiring method behind the board to the wiring method in front of the board, a wiring socket and a middle frame should be added in front of the board,Appendix II.

Figure 1 shows the protruding internal wiring diagram

ZJ3-1A

ZJ3-2A

ZJ3-3A

ZJ3-4A

ZJ3-5A

Figure 2 shows the embedded internal wiring diagram

ZJ3-1A/Q

ZJ3-2A/Q

ZJ3-3A/Q

ZJ3-4A/Q

ZJ3-5A/Q

3 Model specifications: (see Table 1)

model	Rated value of action winding （V）（A）	Maintain the rated value of the winding （A）（V）	Maintain the number of windings		Number of contact points (paid)
			current	voltage	dynamic fit	transformation
ZJ3-1A	24，48， 110，220（V）	-	-	-	-	two
ZJ3-2A					four	-
ZJ3-3A		0.25，0.5， 1，2，4（A）	two	-	four	-
ZJ3-4A			three	-	four	-
ZJ3-5A	24，48，110，220(A)	0.25，0.5，1，2，4(A)	one	-	two	two
	0.25，0.5，1，2，4(A)	24，48，110，220(V)	-	one

4 Technical data
4.1 Action value: The voltage shall not exceed 70% of the rated voltage value; When the current acts, the value of ZJ3-5A is not greater than the rated current.
4.2 Action time: At rated value (voltage or current), the action time shall not exceed 0.01S.
4.3 Holding value: The current shall not exceed 80% of the rated current value. When ZJ3-5A is held at voltage, its value shall not exceed 70% of the rated voltage value.
4.4 The return voltage shall not be lower than 4% of the rated voltage value.
4.5 Power consumption
4.5.1 The voltage winding of ZJ3-1A and 2A shall not exceed 5W.
4.5.2 The voltage of ZJ3-3A, 4A, and 5A windings shall not exceed 8W.
4.5.3 Each current winding of ZJ3-3A shall not exceed 1.2W.
4.5.4 Each current winding of ZJ3-4A shall not exceed 2W.
4.5.5 The current winding of ZJ3-5A shall not exceed 2.7W.
4.6 Contact breaking capacity: In a DC inductive load circuit with a voltage not exceeding 220V and a current not exceeding 2A (time constant of 5H10-3S), the breaking capacity shall not be less than 50W; in an AC circuit (power factor of 0.4), it shall be 500VA with a contact closing current of 10A for 10 seconds.
4.7 Temperature Rise: When the ambient temperature is+40oC, the relay coil should withstand 110% of the rated voltage for a long time, and its temperature rise should not exceed 65oC. The current coil of ZJ3-3A, 4A, and 5A relays allows twice the rated current to be maintained for 10 seconds without electrical or insulation damage.
4.8 The relay is capable of withstanding a dielectric strength test with an AC voltage of 2kV, 50Hz, and a duration of 1 minute.
4.9 Electrical lifespan: 1000 cycles.
4.10 Relay weight: Approximately 0.6Kg.

5 Ordering Instructions
Please specify when placing an order
5.1 Name and model of relay;
5.2 Rated values of action winding and holding winding;
5.3 Order quantity.

ZJ3-A series fast intermediate relay（No image available）