Tesla MCB3P40 3 Pole 40 Amp 6kA C Curve Miniature Circuit Breaker

Description

Forty amps. Heavy loads, sub-mains, one versatile breaker.

The Tesla MCB3P40 is a 3 Pole 40A 6kA C Curve Miniature Circuit Breaker built to IEC/EN60898. At 40A, it sits at the crossover between heavy equipment protection and sub-main distribution — one of the most versatile ratings in the three-phase MCB range, widely specified across commercial, industrial, and infrastructure switchboards in Australia.

• 3 Pole / 40A / 6kA breaking capacity
• C Curve — general-purpose, handles moderate inrush
• 415V AC / 50-60Hz
• Thermal-magnetic trip — bi-metal overload + magnetic short-circuit
• DIN rail mount — 3 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.

One Rating, Two Roles

The 40A is one of the few MCB ratings that pulls double duty on a switchboard. As an equipment breaker, it handles large three-phase HVAC units, industrial compressors, and high-draw commercial kitchen loads. As a sub-main breaker, it feeds downstream distribution boards in commercial and industrial buildings — reducing the number of different MCB ratings needed across a project. The thermal-magnetic trip delivers two-stage protection: a bi-metal strip for sustained overloads, a magnetic element for instantaneous short-circuit response. At 6kA, it's rated for fault levels typical in Australian commercial and light industrial switchboards.

Termination and Installation

Clips straight onto 35mm DIN rail. The pillar clamp terminal accepts rigid conductors up to 25mm² — no ferrules required. Three modules wide, keeping multi-circuit boards compact. IP20 is appropriate for any enclosed switchboard or distribution enclosure.

Compliance You Can Specify With Confidence

Manufactured to IEC/EN60898 with Australian regulatory approval number V08030. The HPC2 Series covers the full range from 10A to 63A in both single-pole and three-pole configurations — one product family for the whole board.

Q: Can the MCB3P40 be used as a sub-main circuit breaker?
A: Yes — at 40A it is commonly used as a sub-main breaker feeding downstream distribution boards in commercial and industrial installations, as well as for direct equipment protection. Always confirm sub-main sizing with load calculations and cable ratings in accordance with AS/NZS 3000.

Q: Is the Tesla MCB3P40 approved for use in Australian switchboards?
A: Yes. The MCB3P40 carries Australian regulatory approval number V08030 and is manufactured to IEC/EN60898. It is suitable for use in compliant Australian switchboard installations.

Q: What conductor sizes does the MCB3P40 accept?
A: The pillar clamp terminal accepts rigid (solid or stranded) copper conductors up to 25mm². Always confirm cable sizing against the circuit load and installation method in accordance with AS/NZS 3000.