TH-K12,TH-K20,TH-K60 thermal overload relay
TH-k/JRS5 series thermal overload relay are suitable for overload and phase-failure protection of ACmotors with frequency of 50/60Hz,voltage up to 660v,current up to 0.28-105A under 8-hours dutyor uninterrupted duty.Functions provided by these relays, are phase-failure protections, temperature compensation,stop button and manual/automatic reset.Applicable Standards: National Standard: GB 14048, International Standards: IEC 60947-4-1.The relays can be mounted onto contactors or installed as single units.
2. Motion Characteristic: Three-phase Balance Motion Time
| No | Times of the setting current | Motion time | Start condition | Ambient temperature | ||
| 1 | 1.05 | >2h | Cold state | 20±5oC | ||
| 2 | 1.2 | <2h | Heat state(Following the No.1 test) | |||
| 3 | 1.5 | <4min | ||||
| 4 | 7.2 | 10A | 2s< Tp≤10s | ≤63A | Cold state | |
| 10 | 4s< Tp≤10s | >63A | ||||
| No | Times of the setting current | Motion time | Start condition | Ambienttemperature | |
| Any two phases | Another phase | ||||
| 1 | 1.0 | 0.9 | >2h | Cold state | 20±5oC |
| 2 | 1.15 | 0 | <2h | Heat state(Following the No.1 test) | |
| Type | Setting range(A) | Forcontactor |
| JRS5-12/Z | 0.2~0.28 | S-K10S-K11S-K12S-K18S-K20S-K21 |
| 0.4~0.6 | ||
| 0.55~0.85 | ||
| 0.7~1.1 | ||
| 1~1.6 | ||
| 1.4~2 | ||
| 1.7~2.5 | ||
| 2~3 | ||
| 2.8~4.4 | ||
| 4~6 | ||
| 5.2~8 | ||
| 7~11 | ||
| 9~13 | ||
| JRS5-20/F | 0.2~0.28 | S-K18S-K20S-K21S-K25S-K35 |
| 0.28~0.42 | ||
| 0.4~0.6 | ||
| 0.55~0.85 | ||
| 0.7~1.1 | ||
| 1~1.6 | ||
| 1.4~2 | ||
| 1.7~2.5 | ||
| JRS5-20/F | 2~3 | S-K18S-K20S-K21S-K25S-K35 |
| 2.8~4.4 | ||
| 4~6 | ||
| 5.2~8 | ||
| 7~11 | ||
| 9~13 | ||
| 12~18 | ||
| 16~22 | ||
| 18~26 | ||
| 24~34 | ||
| 30~40 | ||
| JRS5-60/F | 12~18 | S-K50S-K65S-K80S-K95 |
| 16~22 | ||
| 18~26 | ||
| 24~34 | ||
| 30~40 | ||
| 34~50 | ||
| 43~65 | ||
| 54~80 | ||
| 65~93 | ||
| 85~105 |
Thermal Overload Relay/Thermal Relay/TH-K/JRS5 thermal relay
