ZJJ-2 type DC insulation monitoring relayDetailed product description：

1. Application scope
ZJJ-2 DC insulation monitoring relay is a type of relay that can monitor the insulation condition of DC busbars and is suitable for monitoring the insulation condition of low-voltage DC busbars. When the insulation of the busbar to ground decreases to a certain value, the relay can send a warning signal in advance.

2. Main technical parameters
Voltage level and current value: 220V, 1.5mA; 110V、3.1mA； 48V、6.3mA。  
Relay action value: When the insulation resistance to ground on either side of the busbar drops to the values in the table below, the relay should be activated.

specification	Balanced resistance	Action insulation resistance value	Rated insulation resistance value
220V、1.5mA	2×6.8KΩ	25-15K	100K
110V、3.1mA	2×2KΩ	6.4-3.7K	25K
48V、6.3mA	2×400KΩ	1.5-0.85K	6K

Contact capacity: In a DC inductive load circuit with a voltage not exceeding 250V and a current not exceeding 2A (time constant not exceeding 5 ± 0.75ms), the breaking capacity shall not exceed 50W
Power consumption: The relay output contact can reliably operate and return 10 times under the load conditions specified in the previous article. Not exceeding 7.5W
Power consumption: not exceeding 4.5W.

Internal wiring of ZJJ-2 DC insulation monitoring relay

4. Appearance and opening size
The relay adopts JK-1 housing, with external dimensions and installation hole diagram.

ZJJ-2 type DC insulation monitoring relay