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Thermal Relay

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3UA Thermal Relay

1. Applications of 3UA Thermal Relay:
Model 3UA thermal relay is suitable for using is power system with AC 50Hz, rated operation voltage up to 660V and 1000V, in main circuit, current from 0.1a to 630A. It is used to protect AC three-phase asynchronous motor against overload and open-phase. The relays have the rest push-button for breaking NC contacts and the operating indication and free trio characteristics. The products also can be supplied with protecting case to ensure safety. The products can be plugged in the contactor and intalled independently or mounted by rail.
2. Specifications of 3UA Thermal Relay:
Type Rated operating current(A) Rated insulation voltage (V) Current setting range (A)
3UA50 12.5 660 0.1-0.16 0.16-0.25
0.25-0.4 0.32-0.63
0.63-0.1 0.8-1.25
1-1.6 1.25-2
1.6-2.5 2-3.2
2.5-4 3.2-5
4-6.3 5-8
6.3-10 8-12.5
3UA52 25 660 0.1-0.16 0.16-0.25
0.25-0.4 0.4-0.63
1.63-1 0.8-1.25
1-1.6 1.25-2
1.6-2.5 2-3.2
2.5-4 3.2-5
4-6.3 5.8
6.3-10 8-12.5
10-16 12.5-20
16-25  
3UA54 32 660 4-6.3 6.3-10
10-16 12.5-20
16-25 20-32
3UA58 80 1000 16-25 20-32
25-40 32-50
40-57 50-63
57-70 63-80
3UA59 63 660 0.1-1.6 0.16-0.25
0.25-0.4 0.4-0.63
1.63-1 0.8-1.25
1-1.6 1.25-2
11.6-2.5 2-3.2
2.5-4 3.2-5
4-6.3 5-8
6.3-10 8-12.5
10-16 12.5-20
16-25 20-32
25-40 32-45
40-57 50-63
3UA62 180   55-80 63-90
80-110 90-120
110-35 120-150
135-160 150-180
3UA66 400 1000 80-125 125-200
180-250 200-320
250-400  
3UA68 630 1000 320-500 400-630
Meba has gain good reputation for the high quality of these electronic components we offer such as miniature circuit breaker, earth leakage circuit breaker, AC contactor, Power relay, etc.
pdf3UA Series Thermal Relay
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Products List: ☆ Electrical Components
☆ Circuit Breaker
☆ Miniature Circuit Breaker
☆ Molded Case Circuit Breaker
☆ Earth Leak Circuit Breaker
☆ Residual Current Circuit Breaker
☆ Residual Current Device
☆ Current Transformer
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☆ Surge Protection Device
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