Description

Designed for 40 A feeders, this moulded case circuit breaker delivers robust short-circuit and overload protection with an 18 kA Icu at common AC voltages. It suits new builds and retrofits, and for turnkey boards it integrates cleanly with our industrial panel fabrication to standardize layout and wiring.

Key Specifications – Moulded Case Circuit Breakers

• Model: A1B 125 TMF 40-400 3P FF

• Device type: Moulded Case Circuit Breaker

• Poles: 3P

• Rated current (In): 40 A

• Icu: 18 kA at 240 V AC

• Icu: 18 kA at 380 V AC

• Mounting: Fixed type (FF)

• Trip unit: TMF thermal-magnetic

Highlights

• Higher 18 kA breaking capacity for challenging fault levels

• Compact frame for dense panel layouts

• Clear terminal markings for quick, clean installation

• Reliable TMF protection with simple settings

Typical Uses

• Feeder and sub-distribution circuits

• HVAC and motor branches requiring 18 kA Icu

• Commercial and light-industrial switchboards

Installation & Support

Delivered ready to install with guidance on conductor sizing, coordination, discrimination, and heat management.

• Rapid fulfillment from managed inventory

• Optional commissioning assistance and maintenance plans