Product Overview
- NYKR2 series thermal overload relay (hereafter referred to as thermal relay) is mainly used for overload and open-phase protection for long-time working AC motor with AC 50HZ or 60HZ, rated insulating voltage of 690V, current 0.1-150A.
- Thermal relay has such functions as temperature compensation, action indication, automatic and manual reset and stop, the product performance is stable and reliable.
- The product satisfies GB14048.4, IEC60947-4-1 standard.
- This series of thermal relay can be in plug-in installation with contactor, also can be independently installed.
Structural Characteristics
- Could be in three-phase double-metal piece, release grade is 10A.
- Open-phase protection;
- Setting-current continuously adjustable device;
- Temperature compensation;
- Action indication;
- Test mechanism;
- Stop button;
- Manual and automatic reset button;
- Dividable one normal open and one normal close contact electrically;
- Installation method: plug-in installation or independent installation with contactor.
Main Specifications and Technical Parameters
| Items | NYKR2-F25 | NYKR2-F36 | NYKR2-F93 | NYKR2-F140 | ||
|---|---|---|---|---|---|---|
| Current Grade | 25 | 40 | 93 | 140 | ||
| Rated insulation voltage | 690 | 690 | 690 | 690 | ||
| Open-phase protection | √ | √ | √ | √ | ||
| Manual and automatic reset | √ | √ | √ | √ | ||
| Temperature compensation | √ | √ | √ | √ | ||
| Release indication | √ | √ | √ | √ | ||
| Test button | √ | √ | √ | √ | ||
| Stop button | √ | √ | √ | √ | ||
| Installation method | Plug-in type | Plug-in type | Plug-in type | Plug-in type | ||
| Auxiliary contact | 1NO+1NC | 1NO+1NC | 1NO+1NC | 1NO+1NC | ||
| AC-15 220V Rated current A | 2.73 | 2.73 | 2.73 | 2.73 | ||
| AC-15 380V Rated current A | 1.58 | 1.58 | 1.58 | 1.58 | ||
| DC-15 220V Rated current A | 0.2 | 0.2 | 0.2 | 0.2 | ||
| Wire sectional area mm2 | Main circuit | Single-core or stranded wire | 4～10 | 4～10 | 4～35 | 4～35 |
| Wiring screw | M4 | M4 | M10 | M10 | ||
| Auxiliary loop | Single-core or stranded wire | 0.5～2.5 | 0.5～2.5 | 0.5～2.5 | 0.5～2.5 | |
| Wiring screw | M3.5 | M3.5 | M3.5 | M3.5 | ||
