Tomzn 4P 63A AC MCB

Tomzn 4P 63A AC MCB – High-Capacity 4-Pole Protection for 3-Phase Electrical Systems

The Tomzn 4P 63A AC Miniature Circuit Breaker (MCB) is a robust and reliable protective device designed to safeguard three-phase electrical circuits from overloads, short circuits, and other current-related faults. Built to handle 63 amps of current across four poles (three phases + neutral), this MCB is ideal for high-demand residential, commercial, and light industrial applications.

With a rated voltage of 230/400V AC, the breaker provides consistent protection across all phases and the neutral conductor, making it an essential component for power distribution systems, motor control panels, HVAC systems, and other multi-phase loads. The 4-pole design ensures that in the event of a fault, all conductors are simultaneously disconnected, maximizing safety and reducing the risk of electrical damage.

This MCB uses a thermal-magnetic trip mechanism, offering precise and fast operation under both overload and short-circuit conditions. Its Type C tripping curve is suitable for general-purpose circuits including inductive loads such as motors, pumps, and transformers.

Key Features:

• Poles: 4P (Three-phase + Neutral)

• Rated Current: 63A

• Voltage Rating: 230/400V AC

• Breaking Capacity: 6kA

• Tripping Curve: Type C (ideal for moderate inrush loads)

• Trip Mechanism: Thermal-magnetic

• Mounting Type: 35mm DIN rail

• Housing Material: Flame-retardant thermoplastic (UL94-V0 rated)

• Operating Temperature Range: -25°C to +70°C

• Indicator: ON/OFF visual status window

• Standards Compliance: IEC/EN 60898-1

Benefits:

• Complete 4-Pole Isolation: Enhances safety by disconnecting all lines simultaneously

• High Current Handling: Suitable for higher power systems up to 63A

• Fast and Accurate Fault Response: Reduces equipment damage and downtime

• Durable and Fire-Resistant: Built to operate reliably in demanding environments

• Compact and Standardized Design: DIN rail mount for quick and easy installation

Benefits:

• Complete 4-Pole Isolation: Enhances safety by disconnecting all lines simultaneously

• High Current Handling: Suitable for higher power systems up to 63A

• Fast and Accurate Fault Response: Reduces equipment damage and downtime

• Durable and Fire-Resistant: Built to operate reliably in demanding environments

• Compact and Standardized Design: DIN rail mount for quick and easy installation