| Categories | Hydraulic electromagnetic circuit breaker |
| Model | B2 |
| Maximum voltage | 277V AC 50/6Hz,80V DC |
| Current Ratings | 1A to 50A |
| Insulation resistance | Minimum of 100 Megohms at 50V DC |
| Operating Temperature | -40℃ to +85℃ |
| Number of poles | 1,2,3 |
| Weight | Approximately 65grams/pole |
| Agency Certifications | EN60934,UL1077,GB17701,and UL489A |
| Electrical | see table below |
| SERIES | B2 SERIES |
| Type | Voltage Max.Rating Ue(V) | Frequency(Hz) | Phases | Minimum number of poles | Rated Current ln(A) | Short Circuit Capacity(Amps) | |||
| UL/CSA | VDE/TUV/VVV | ||||||||
| Without Backup Fuse | With Backup Fuse | Without Backup Fuse | With Backup Fuse | ||||||
| B3 | 65 | DC | -- | 1 | 1~50 | -- | 7500 | -- | 3000 |
| 80 | 1~50 | -- | 5000 | -- | 3000 | ||||
| 1~50 | |||||||||
| 250 | 50/60 | 1α3 | 1 | 1~100 | -- | 3000 | -- | 3000 | |
| 5000(1) | --- | -- | 3000 | ||||||
Note:(1) Use back-up protectors of no more than 60A
Time Delay Values:Seconds
| Delay Type | 1ln | 1.25ln | 2ln | 4ln | 8ln |
| D0 | No trip | May Trip | Max 0.06 | Max 0.018 | Max 0.017 |
| D1 | No trip | 0.5-6.5 | 0.1-1.2 | 0.03-0.5 | 0.004-0.1 |
| D2 | No trip | 3.0-60 | 1-12 | 0.15-2 | 0.008-0.5 |
| D3 | No trip | 70-700 | 15-150 | 2-20 | 0.018-0.5 |
| A0 | No trip | May Trip | Max 0.06 | Max 0.022 | Max 0.017 |
| A1 | No trip | 0.7-12 | 0.13-3 | 0.03-1 | 0.01-0.15 |
| A2 | No trip | 10-120 | 2-20 | 0.2-3 | 0.015-0.8 |
| A3 | No trip | 70-700 | 10-150 | 1.5-20 | 0.013-0.85 |
| H1 | No trip | 0.5-6.5 | 0.18-2.3 | 0.05-0.6 | 0.18-0.22 |
| H2 | No trip | 1.5-50.0 | 0.5-10 | 0.10-2 | 0.09-1.4 |
| H3 | No trip | 45-345 | 8.5-100 | 1.2-15 | 0.256-8.0 |
| G1 | No trip | 0.7-12 | 0.18-2.3 | 0.05-0.6 | 0.018-0.2 |
| G2 | No trip | 7.0-100 | 1.1-18 | 0.2-3 | 0.075-1.2 |
| G3 | No trip | 50-700 | 12-150 | 1.5-20 | 0.4-7.9 |
B2 and B3 Delay Curve Diagram
Specification of B2 series circuit breaker and code implication(for selection)
B2 Series Circuit Breaker - Form&Fit Drawings
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