ZJ3-C series fast intermediate relayDetailed product description：

1 Purpose
The ZJ3-C 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.

2 Working principle and structure
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 ZJ3-1C relay has only one voltage operated winding;
2.2.2 ZJ3-2C relay has one voltage action winding and two current holding windings;
2.2.3 ZJ3-3C relay has one voltage action winding and three current holding windings;
2.2.4 The ZJ3-4C relay has one voltage winding and one 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 the wiring method behind the board needs to be changed to the wiring method in front of the board, a wiring socket and a middle frame in front of the board should be added. SeeAppendix II.



Figure 1 shows the protruding internal wiring diagram

ZJ3-1C/8.0	ZJ3-1C/4.4	ZJ3-1C/6.2
ZJ3-2C/8.0	ZJ3-3C/8.0	ZJ3-4C/8.0

Figure 2 shows the embedded internal wiring diagram

ZJ3-1C/8.0/Q	ZJ3-1C/4.4/Q	ZJ3-1C/6.2/Q
ZJ3-2C/8.0/Q	ZJ3-3C/8.0/Q	ZJ3-4C/8.0/Q

3 ZJ3-C series fast intermediate relay 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
ZJ3-1C/8.0	24，48， 110，220（V）	-	-	-	eight	-
ZJ3-1C/4.4					four	four
ZJ3-1C/6.2					six	two
ZJ3-2C/8.0		0.25，0.5， 1，2，4（A）	two	-	eight	-
ZJ3-3C/8.0			three	-	eight	-
ZJ3-4C/8.0	24，48，110，220(A)	0.25，0.5，1，2，4(A)	one	-	eight	-
	0.25，0.5，1，2，4(A)	24，48，110，220(V)	-	one

Technical data of ZJ3-C series fast intermediate relay
4.1 Action value: The action voltage of a voltage type relay is 50% -70% of the rated voltage value; The operating current of current type relays shall not exceed 80% of the rated current.
4.2 Action time: At rated value (voltage or current), the action time shall not exceed 7ms.
4.3 Holding value: The current shall not exceed 80% of the rated current value. When ZJ3-4C/8.0 is held at voltage, its value shall not exceed 70% of the rated voltage value.
4.4 Return value: not less than 50% of the rated value.
4.5 Power consumption
4.5.1 The power consumption of ZJ3-1C, 2C, 3C, and 4C voltage windings shall not exceed 8W.
4.5.2 Each current of ZJ3-2C shall not exceed 1.2W in the winding.
4.5.3 The current of each winding of ZJ3-3C shall not exceed 2W.
4.5.4 The current winding of ZJ3-4C shall not exceed 4W.
4.6 Contact breaking capacity: The contact of the relay has a breaking capacity of 50W in DC inductive load circuits with voltage not exceeding 250V and current not exceeding 1A (time constant of 5H10-3S), and 250VA in AC circuits with voltage not exceeding 250V (power factor of 0.4), with a long-term closing current of 5A for the relay.
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 self holding winding is allowed to withstand 3 times the rated holding current for 5 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 0.8Kg.

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-C series fast intermediate relay（No image available）