GE to ABB breaker cross-reference: replacement guide
Technical guide to replacing a discontinued GE breaker with its ABB equivalent: poles, rated current, kA, voltage, mounting and trip curve, checked one by one.
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Short guides written by MARPE's engineering team: the questions we get on WhatsApp, answered properly.
ABB molded-case breakers: A2A series vs XT family (XT5N–XT7S)
When to use an A2A breaker up to 250 A and when to move to the XT family up to 1600 A: TMF, TMA and Ekip trip units, terminals and mounting explained.
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How to select a thermal-magnetic breaker for your panelboard
Ampere rating, poles, interrupting capacity, trip curve and coordination with the conductor: the five criteria for selecting a breaker on 120/240 V systems.
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NLAB, NAB, CCB and TLM panelboards: differences and uses
What sets TLM, NLAB, NAB and CCB panelboards apart: the type of breaker they accept, typical currents and where each one belongs in the installation.
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Medium-voltage switchgear maintenance: tests and frequency
Tests included in MV switchgear and LV switchboard maintenance: insulation, current injection, opening and closing times, pole simultaneity and interlocks.
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What SENCAMER approval means for electrical equipment
What it means for a breaker or switchboard to be approved by SENCAMER, what the authority verifies and the risks of installing product without certification.
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