DZ-639 type large capacity intermediate relayDetailed product description：

Application of DZ-639 Large Capacity Intermediate Relay
DZ-639 (RXMEl) large capacity intermediate relay is used in industrial automation control and power system secondary circuits as an intermediate auxiliary and to expand the control range.

2 Characteristics
2.1 Small size, large contact breaking capacity.
2.2 The coil excitation is direct current.
2.3 The movement of the contact point can be manually tested through the small hole on the cover.

3 Principles of Action
This relay is an electromagnetic snap on relay, consisting of an electromagnetic system and a contact system. When the coil is energized, the electromagnetic system generates magnetic attraction, which attracts the armature towards the iron core. The relay can provide 2 or 4 sets of high-capacity contacts by driving the contact group with the armature to switch the contact circuit.
The shell adopts the imported Combiflex protruding modular insertion structure.

Technical data of DZ-639 large capacity intermediate relay
4.1 Operating voltage: not exceeding 70% of the rated voltage.
4.2 Return voltage: not exceeding 5% of the rated voltage.
4.3 Coil power consumption: 2.7W.
4.4 Contact Performance
The main contact of the relay should be able to disconnect DC circuits with a voltage not exceeding 250V and a current not exceeding 2.5A, lA (four contacts) (two contacts) and a capacity of 100W inductive load (time constant of 40 ± 6ms), or AC circuits with a voltage not exceeding 250V and a current not exceeding 10A and a capacity of 1000VA (power factor COS=0.4 ± 0.1); The contact point has reliably operated 104 times.
4.5 Insulation withstand voltage: 50Hz, 1min, 2kV.
4.6 Impulse voltage: 5kV.
4.7 Rated voltage and relay resistance. (See Table 1)

Rated voltage DC (V)	twenty-four	forty-eight	one hundred and ten	two hundred and twenty
Coil resistance value (Ω)	two hundred and eighty-three	one thousand one hundred and forty-two	five thousand seven hundred and eighty	twenty thousand five hundred and fifty

4.8 Contact form and code (see Table 2)

DZ-639/200 DZ-639/020 DZ-639/110 DZ-639/220

RK221 025 RK221 026 RK221 027 RK221 052

Note: The last three digits of the model indicate the contact form, with the first digit indicating dynamic closing, the second digit indicating dynamic breaking, and the third digit indicating conversion.
4.9 Protruding modular insertion structure, with external dimensions as shown inAppendix IIIAttached Figure 1 (2S6C).
4.1O The installation dimensions of the protruding modular insertion structure base shall be in accordance withAppendix IIIOne can be inserted into Figure 5 (2S6C), two can be inserted side by side according to Figure 6 (2S12C), two can be inserted directly according to Figure 7 (4S6C), and four can be inserted according to Figure 8 (4S12C).

5 Ordering Instructions
Please indicate the model, contact code, and voltage level when placing an order.
Example: DZ-639/220 DC220V

DZ-639 type large capacity intermediate relay（No image available）