Tesla MCB1P40 Single Pole 40 Amp 6kA C Curve Miniature Circuit Breaker

Description

Forty amps, single phase. Heavy industrial, mining, high-capacity sub-mains.

The Tesla MCB1P40 is a Single Pole 40A 6kA C Curve Miniature Circuit Breaker built to IEC/EN60898. At 40A it sits at the heavy end of the single-phase MCB range — purpose-built for mining site switchboards, large industrial machinery circuits, and high-capacity single-phase sub-main feeds where standard ratings don't cut it.

• Single Pole / 40A / 6kA breaking capacity
• C Curve — general-purpose, handles moderate inrush
• 240V AC / 50-60Hz
• Thermal-magnetic trip — bi-metal overload + magnetic short-circuit
• DIN rail mount — 1 module width, 35mm rail
• Pillar clamp terminal — rigid conductor up to 25mm²
• IP20 rated for enclosed switchboard installation
• IEC/EN60898 — Australian approval number V08030
• Mechanical life: 10,000 cycles | Electrical life: 4,000 cycles
• HPC2 Series — available 10A to 63A

Fast shipping across Australia — order online now for quick dispatch.

Heavy-Duty Single-Phase Protection

The 40A single pole MCB is a specialist rating — not the everyday GPO or air con breaker, but the one you reach for when the load is serious. On mine sites and remote construction, it protects high-current single-phase circuits powering site offices, portable equipment, and process machinery where reliable overcurrent protection in a compact DIN rail package is essential. In industrial and manufacturing environments, it handles large single-phase motors and heavy equipment circuits that outgrow the 32A rating.

As a main incomer, it suits smaller single-phase distribution boards in industrial and commercial buildings where the incoming supply demand reaches 40A. The thermal-magnetic trip delivers bi-metal protection for sustained overloads and magnetic trip for instantaneous short-circuit response — at 6kA, rated for Australian industrial switchboard fault levels.

Termination and Installation

Clips straight onto 35mm DIN rail. The pillar clamp terminal accepts rigid conductors up to 25mm² — no ferrules required. Despite the 40A rating it stays at 1 module wide — the same slim footprint as every other HPC2 single-pole MCB, keeping even high-capacity single-phase boards tidy. IP20 is appropriate for any enclosed switchboard or distribution enclosure.

Q: When should I use a 40A single pole MCB instead of a 32A?
A: Choose 40A when the calculated circuit load or cable sizing exceeds 32A — typically for large single-phase motors, high-capacity sub-main feeds, main incomer protection on smaller single-phase boards, or mining and site applications where load demand is higher. Always confirm circuit sizing with load calculations and AS/NZS 3000.

Q: Is the Tesla MCB1P40 approved for use in Australian switchboards?
A: Yes. The MCB1P40 carries Australian regulatory approval number V08030 and is manufactured to IEC/EN60898. It is suitable for use in compliant Australian residential, commercial, industrial, and mining switchboard installations.

Q: What conductor sizes does the MCB1P40 accept?
A: The pillar clamp terminal accepts rigid (solid or stranded) copper conductors up to 25mm². Always confirm cable sizing against the circuit load, installation method, and AS/NZS 3000 for 40A circuit requirements.