ADB3-63-1P Miniature Circuit Breaker

The ADB3-63-1P Miniature Circuit Breaker (MCB) is a standard electrical protection device engineered for single-phase low-voltage AC systems. Characterized by its “1P” (Single-Pole) configuration, this breaker is specifically designed to protect and switch the single live (phase) conductor of an electrical circuit. It employs a thermal-magnetic tripping mechanism to offer comprehensive fault protection: the thermal component safeguards against sustained overload currents, while the magnetic component provides an instantaneous trip for dangerous short-circuit events. As part of the 63A frame series, it is available in various current ratings up to 63A, complies with international safety standards like IEC/EN 60898, and is utilized mainly in residential and light commercial distribution boards for securing individual branch circuits.

Technical Specification

Specification Category	Parameter	Typical Value	Notes
Basic Configuration	Poles	$1 P$ (Single-Pole)	Switches and protects one line conductor (Phase).
	Frame Size	$63 A$	The maximum current the device is built to handle.
Electrical Rating	Rated Current ( $I_{n}$ )	$6 A, 10 A, 16 A, 20 A, 25 A, 32 A, 40 A, 50 A, 63 A$	Available in common current steps.
	Rated Voltage ( $U_{e}$ )	$230 V A C /400 V A C$	Used for $230 V$ single-phase circuits; Rated voltage for the series frame.
	Rated Frequency	$50/60 Hz$	Standard AC power frequency.
Fault Protection	Rated Short-Circuit Breaking Capacity ( $I_{c n}$ )	$6 k A$ (6000 A)	The maximum fault current the breaker can safely interrupt.
	Tripping Curve (Standard)	C Curve	Common for general protection of lighting and power circuits.
	Protection Type	Thermal-Magnetic	Protection against overload and short-circuit.
Mechanical	Electrical Life	$\geq 10, 000$ operations	The number of load switching cycles.
	Mechanical Life	$\geq 20, 000$ operations	The number of manual ON/OFF switching cycles.
	Mounting	$35 mm$ DIN Rail	Standard mounting for distribution boards.
Standards	Compliance	IEC 60898-1 / GB/T 10963.1	International and regional standards for MCBs.