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Brand | ABB |
---|---|
Model | E2N 20 |
Category | Circuit breakers |
Language | English |
Details on connecting the circuit-breaker to the power circuit.
Steps for initial checks and preparatory operations before service.
Safety precautions and preliminary steps before maintenance.
Technical specifications of the PR121/P unit.
Description of the overload protection function with inverse time.
Description of short-circuit protection with adjustable delay.
Description of instantaneous short-circuit protection.
Description of earth fault protection with adjustable delay.
Recommendations for making connections according to standards.
Checking current and trip coil connections before service.
Steps for installing and uninstalling a PR121/P unit.
Table describing LED indications for different statuses and alarms.
Technical specifications for the PR122/P unit.
Description of overload protection with inverse time.
Short-circuit protection with fixed or inverse time.
Earth fault protection with fixed or inverse time.
Checking CS and TC connections before closing CB.
Procedure for installing a PR123/P unit.
Table detailing parameters and functions for each protection.
Detailed description of LED indications for various states.
EMAX circuit-breakers with toroid for residual current protection.