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Circuit Breakers
| The following standards are commonly used for circuit breakers
durable enough to withstand the vibration and shock environment, and
to passenger transit, rail vehicles |
| Standard: |
NEMA AB1 - Molded Case Circuit
Breakers |
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| Purpose: |
This is a standard for molded-case circuit breakers, molded-case
switches, and circuit-breaker enclosures. This standard is a comprehensive
specification that provides criteria based upon the particular requirements
of each device. |
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| Criteria: |
Specify compliance with standard, specific additional criteria
(if desired) |
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| Usage: |
... shall meet the requirements of NEMA AB1. |
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| Standard: |
NEMA AB3 - Molded Case Circuit
Breakers and Their Application |
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| Purpose: |
This application guide covers molded-case circuit breakers and
molded-case switches, single pole and multi-pole, if used in infused,
together with accessories used with them. This standard provides
a wide variety of types and applications which may be added to the
citing if desired. |
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| Criteria: |
Specify compliance with standard, specific additional criteria
(if desired) |
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| Usage: |
... shall be in accordance with NEMA AB3 |
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| Standard: |
ANSI C37 - Circuit Breakers
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| Purpose: |
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| Criteria: |
Copy of standard required for further
evaluation in this application |
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| Usage: |
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