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1.Application |
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JRS5 thermal relay is suitable for overload protection of AC motor operated on 8-houres dutyor uninterupted duty. The overload protected AC motor with frequency 50Hz, voltage up to660V, current up to 105A. Several functions provided by these relays are: phase-failure protection,temperature compensation, ON/OFF indication and manual/automatic reset. The product con-forms to IEC60947-4-1 stardand. |
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2. Motion Characteristic: Three-phase Balance Motion Time |
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| No |
Times of thesetting current |
Motion time |
Start condition |
Ambienttemperature |
| 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 |
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3. Phase-losing Motion Characteristic |
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| No |
Times of the setting current |
Motiontime |
Start condition |
Ambient temperature |
| 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) |
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4. Specification |
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Type |
Setting range(A) |
Forcontactor |
JRS5-12/Z |
0.2~0.28 |
S-K10
S-K11
S-K12
S-K18
S-K20
S-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-K18
S-K20
S-K21
S-K25
S-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-K18
S-K20
S-K21
S-K25
S-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-K50
S-K65
S-K80
S-K95 |
| 16~22 |
| 18~26 |
| 24~34 |
| 30~40 |
| 34~50 |
| 43~65 |
| 54~80 |
| 65~93 |
| 85~105 |
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