DZB-500 series intermediate relayDetailed product description：

Application of DZB-500 series intermediate relay

The intermediate relays in this series are operated by DC voltage and maintained by DC current, and can be used in protection and automatic control circuits.

2 DZB-500 series intermediate relay model meaning


Technical data of DZB-500 series intermediate relay

The contacts, windings, and basic parameters of DZB-500 series relays are listed in the following table:

model	contact form	Winding type	Rated voltage (V)	Rated current (A)
five hundred and twelve DZB—513 five hundred and fourteen five hundred and fifteen	Two conversions Two action combination, two conversion Four conversions Six dynamic combinations	A voltage winding and A current winding Can be used as a working winding And maintain the winding	24，48， 110，220	0.5，1， 2，4
five hundred and thirty-two DZB—533 five hundred and thirty-four five hundred and thirty-five	Two conversions Two action combination, two conversion Four conversions Six dynamic combinations	A voltage working winding and Three current holding windings	24，48， 110，220	0.5，1， 2，4

3.1 When the ambient temperature is+20 ℃, the reliable operating voltage of the relay shall not exceed 70% of the rated voltage/holding current shall not exceed 80% of the rated current.
3.2 Keep the winding in a dead state, and the relay action time and return time shall not exceed 0.05s.
3.3 Relay contact disconnection capability
3.3.1 In a DC circuit, when the voltage does not exceed 250V and the current does not exceed 1A, and there is an inductance (time constant not greater than 5 × 10-3S), the breaking power of the contacts is 50W.
In an AC circuit, when the voltage does not exceed 250V and the current does not exceed 2.5A, the contact breaking power is 500VA.
3.3.3 When the contact is in the closed position, it is allowed to pass 5A current for a long time.
When the ambient temperature is -40 ℃, the voltage winding can withstand 110% of the rated voltage for a long time, with a temperature rise not exceeding 65K, while the current winding can withstand 3 times the rated current for 3 seconds.
The conductive parts of the relay and the iron core can withstand AC voltage of 50Hz and 2kV for 1 minute without breakdown or flashover.
3.6 The relay can withstand 105 actions.
3.7 The appearance and installation hole size of DZB-500 series relays are shown in Figure 1

Figure 1 D2B-500 series relay appearance and installation hole size diagram

3.8 The resistance value of the coil is shown in the table below

five hundred and twelve five hundred and thirteen five hundred and fourteen five hundred and fifteen DZB- five hundred and thirty-two five hundred and thirty-three five hundred and thirty-four five hundred and thirty-five	Voltage working winding	DC voltage	220V	110V	48V	24V
		coil resistance	18kΩ	4.6kΩ	750Ω	188Ω
	Voltage working winding	DC voltage	220V	110V	48V	24V
		coil resistance	35kΩ	3.4kΩ	800Ω	200Ω

A coil with a wire diameter greater than 0.09 and a voltage of 3.9 220V is considered to be powered on for a short period of time, while a coil with a wire diameter less than 0.09 is considered to be powered on for a long period of time.

4 Ordering Instructions
4.1 Relay name, model, and quantity.
4.2 Rated voltage and current.

DZB-500 series intermediate relay（No image available）