Function and Application
The NJYB2 series voltage protection relay (hereinafter referred to as the relay) is mainly used in control circuits with an AC frequency of 50Hz and a rated control circuit power supply voltage up to AC415V (three-phase three-wire) as a phase failure, phase sequence, three-phase voltage imbalance, overvoltage, and undervoltage protection device to connect or disconnect the circuit.
Detailed Description
Parameters:
Phase Failure and Phase Sequence Protection: ≤1s
Environmental Temperature: -25°C~70°C
Electrical Life: 105
Mechanical Life: 106
Advantages/Core Functions:
01 Excellent Design, Saves Space and Brings Peace of Mind
Modular Design 'Makes Room' for Equipment Inside the Cabinet, Width Only 36mm
Installed on HT35 Rail, Fast and Secure Installation
Improves Efficiency in Fault Cause Identification, LED Indicator Light Clearly Displays Operation Status at a Glance
Detailed Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| Model | NJYB2-G |
| | NJYB2-H |
| Rated Control Circuit Power Supply Voltage Us | | AC380V, AC400V, AC415V 50Hz |
| Protection Function | Phase Failure, Phase Sequence | |
| Overvoltage Protection | (1.05~1.3)×Us(Adjustable), 0.1s~10s(Adjustable) |
| Undervoltage Protection | (0.7~0.95)×Us(Adjustable), 0.1s~10s(Adjustable) |
| Three-Phase Unbalance Protection | (5%~15%)×Us(Adjustable), 0.1s~10s(Adjustable) |
| Number of Contacts | | 1 Set Transfer |
| | 1 Set Transfer + 1 Normally Closed |
| Contact Capacity | Ue/le: AC-15 415V/0.47A Ith: 3A | |
| Electrical Life | | 10⁵ |
| Mechanical Life | | 10⁶ |
| Environmental Temperature | | -25℃~+70℃ |
| Installation Method | | Rail Type |
