3UA-12.5 Thermal overload relay
Application
3UA thermal relay is suitable for AC 50/60HZ, voltage up to 660V and current up to 630A general AC motor of long or discontinuous long operation, used as overload protection and has the functions of breaking phase protection, temperature compensation,and trip indication.It can automatically and manually get back. It can be fixed with contactor 3TF together,also be independtly fixed. The product conforms to IEC60947-4-1 standard.
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±5℃ | ||
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 | |
10A | 4S<Tp≤10S | >63A |
Phase-losing Motion Characteristic
No | Times of the setting current | Motion time | Start condition | Ambient temperature | |
Any two phases | Another phase | ||||
1 | 1 | 0.9 | >2h | Cold state | 20±5℃ |
2 | 1.15 | 0 | <2h | Heat state (Following the NO.1 test) |
Specification
Type | Number | Setting range (A) | For contactor |
3UA- 12.5/Z |
0A | 0.1~0.16 | 3TF-09/12 |
0C | 0.16~0.25 | ||
0E | 0.25~0.4 | ||
0G | 0.4~0.63 | ||
0J | 0.63~1 | ||
0K | 0.8~1.25 | ||
1A | 1~1.6 | ||
1B | 1.25~2 | ||
1C | 1.6~2.5 | ||
1D | 2~3.2 | ||
1E | 2.5~4 | ||
1F | 3.2~5 | ||
1G | 4~6.3 | ||
1H | 5~8 | ||
1J | 6.3~10 | ||
1K | 8~12.5 | ||
2S | 10~14.5 |
Type | Number | Setting range (A) | For contactor |
3UA-25/Z | 0A | 0.1~0.16 | 3TF-16/22 |
0C | 0.16~0.25 | ||
0E | 0.25~0.4 | ||
0G | 0.4~0.63 | ||
0J | 0.63~1 | ||
0K | 0.8~1.25 | ||
1A | 1~1.6 | ||
1B | 1.25~2 | ||
1C | 1.6~2.5 | ||
1D | 2~3.2 | ||
1E | 2.5~4 | ||
1F | 3.2~5 | ||
1G | 4~6.3 | ||
1H | 5~8 | ||
1J | 6.3~10 | ||
1K | 8~12.5 | ||
2A | 10~16 | ||
2B | 12.5~20 | ||
2C | 16~25 |
Type | Number | Setting range (A) | For contactor |
3UA- 32/Z |
1G | 4~6.3 | 3TF-32 |
1J | 6.3~10 | ||
2A | 10~16 | ||
2B | 12.5~20 | ||
2C | 16~25 | ||
2D | 20~32 | ||
2Q | 25~36 | ||
3UA- 45/Z |
0A | 0.1~0.16 | 3TF-32 |
0C | 0.16~0.25 | ||
0E | 0.25~0.4 | ||
0G | 0.4~0.63 | ||
0J | 0.63~1 | ||
0K | 0.8~1.25 | ||
1A | 1~1.6 | ||
1B | 1.25~2 | ||
1C | 1.6~2.5 | ||
1D | 2~3.2 | ||
1E | 2.5~4 | ||
1F | 3.2~5 | ||
1G | 4~6.3 | ||
1H | 5~8 | ||
1J | 6.3~10 | ||
1K | 8~12.5 | ||
2A | 10~16 | ||
2B | 12.5~20 | ||
2C | 16~25 | ||
2D | 20~32 | ||
2Q | 25~36 | ||
2R | 32~40 | ||
8M | 36~45 | ||
3UA- 80/Z |
1G | 4~6.3 | 3TF-45 3TF-63 3TF-75 3TF-85 |
8A | 11~17 | ||
2B | 12.5~20 | ||
2C | 16~25 | ||
2D | 20~32 | ||
2E | 25~40 | ||
2F | 32~50 | ||
2T | 40~57 | ||
2P | 50~63 | ||
2V | 57~70 | ||
2U | 63~80 | ||
8W | 70~88 | ||
3UA- 63/F |
0A | 0.1~0.16 | 3TF-09-63 |
0C | 0.16~0.25 | ||
0E | 0.25~0.4 | ||
0G | 0.4~0.63 | ||
0J | 0.63~1 |
Type | Number | Setting range (A) | For contactor |
3UA-63/F | 0K | 0.8~1.25 | 3TF-09-63 |
1A | 1~1.6 | ||
1B | 1.25~2 | ||
1C | 1.6~2.5 | ||
1D | 2~3.2 | ||
1E | 2.5~4 | ||
1F | 3.2~5 | ||
1G | 4~6.3 | ||
1H | 5~8 | ||
1J | 6.3~10 | ||
1K | 8~12.5 | ||
2A | 10~16 | ||
2B | 12.5~20 | ||
2C | 16~25 | ||
2D | 20~32 | ||
2E | 25~40 | ||
2M | 32~45 | ||
2T | 40~57 | ||
2P | 50~63 | ||
3UA-135 | 2H | 55~80 | 3TF-85/110 |
2W | 63~90 | ||
2X | 80~110 | ||
3H | 90~120 | ||
3J | 110~135 | ||
3UA-150 | 2H | 55~80 | 3TF-140 |
2W | 63~90 | ||
2X | 80~110 | ||
3J | 110~135 | ||
3K | 120~150 | ||
3UA-180/F | 2H | 55~80 | 3TF-170/250 |
2W | 63~90 | ||
2X | 80~110 | ||
3H | 90~120 | ||
3J | 110~135 | ||
3K | 120~150 | ||
3L | 135~160 | ||
3M | 150~180 | ||
3UA-400 | 2K | 80~125 | 3TF-110~400 |
3B | 125~200 | ||
3C | 160~250 | ||
3D | 200~320 | ||
3E | 250~400 | ||
3UA-630 | 3F | 320~500 | 3TF-400 |
3G | 400~630 | ||
3UA-12.5 3UA-32 3UA-25
3UA-63 3UA-80 3UA-180
3UA-400 3UA-630