Thermal Overload Relay JRS2
The JRS2 thermal overload relay offers reliable protection against overload and phase failure. It features adjustable current settings and reset options for manual or automatic recovery.
Technical Specifications
Overview
JRS2 Thermal Overload Relay
The JRS2 series thermal overload relay provides reliable protection against overload and phase failure in electrical circuits. Designed for AC 50/60Hz systems, it supports voltages up to 660V and currents up to 630A, making it ideal for general AC motors during long or discontinuous operation. This versatile component features adjustable current settings, temperature compensation, and trip indication, with support for both automatic and manual reset.
Technical Specifications
- Rated Voltage
- 660 V
- Rated Current
- 630 A
- Frequency
- 50/60 Hz
- Standards
- IEC60947-4-1
Features
Key Features
- Phase-losing protection
- Temperature compensation
- Trip indication
- Adjustable current settings
- Manual and automatic reset options
- NC and NO auxiliary contacts
Motion Characteristics
Three-Phase Balance Motion Time
| Test No. | Times of Setting Current | Motion Time | Start Condition |
|---|---|---|---|
| 1 | 1.05 | >2h | Cold state |
| 2 | 1.2 | <2h | Heat state |
| 3 | 1.5 | <4min | Heat state |
| 4 | 7.2 | 2s < Tp ≤ 10s (≤63A) | Cold state |
