JR28se series thermal overload relays are designed for overload and phase-failure protection of AC motors operating at 50/60Hz, with voltages up to 690V and currents from 0.1A to 93A, under 8-hour duty or continuous operation.
These relays provide reliable protection features including phase-failure protection, ON/OFF indication, temperature compensation, and manual or automatic reset.
Standard: IEC 60947-4-1
They can be directly mounted onto contactors or used as standalone units
| NO. | Times the setting current | Release time | Test condition | |
| 1 | 1.05 | >2h | Start from Cold status | |
| 2 | 1.2 | <2h | Start from Heat status right after item no.1 | |
| 3 | 1.5 | <2min | ||
| 4 | 7.2 | 2s<Tp≤10s | Start from Cold status | |
| Any two phases | Another phase | |||
| 5 | 1.0 | 0.9 | >2h | Start from Cold status |
| 6 | 1.15 | 0 | <2h | Start from Heat status right after item no.5 |
