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
> What is the role of a fuse?
A fuse refers to an electrical device that, when the current exceeds a specified value, uses the heat generated by itself to fuse the melt and disconnect the circuit...
> Precautions for the working principle of molded case circuit breakers
The molded case circuit breaker adopts a heat release contact. When the current exceeds the rated value, the contact is heated, causing the spring force to decrease,...
> The difference between fast fuse and ordinary fuse
Fast fuse is a kind of fuse, fast fuse is used for short circuit protection of semiconductor rectifier components or circuit breakers. Because the overload capacity ...
> The meaning and working principle of RCCB, and a few points you want to know
This article will tell you about the working principle, function, and main structure of residual current circuit breaker (RCCB), and solve customers' concerns about ...