Tesla MCB3P25 3 Pole 25 Amp 6kA C Curve Miniature Circuit Breaker

Description

Twenty-five amps. Three phases. Built for heavier circuit loads.

The Tesla MCB3P25 is a 3 Pole 25A 6kA C Curve Miniature Circuit Breaker built to IEC/EN60898. It protects three-phase distribution circuits from overload and short-circuit faults — reliable, DIN rail-ready, and approved for Australian switchboard use.

• 3 Pole / 25A / 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.

Built for the Board, Rated for the Job

The 25A rating steps up from the 20A to cover higher-demand three-phase circuits — commonly specified for larger HVAC equipment, commercial kitchen three-phase loads, and power distribution circuits where the 20A rating no longer provides sufficient headroom. The thermal-magnetic trip mechanism delivers two-stage protection: a bi-metal strip handles sustained overloads, while a magnetic element trips instantaneously on short-circuit fault current. At 6kA breaking capacity, it's rated for fault levels typical in commercial and light industrial distribution boards across Australia.

The C Curve characteristic suits general loads with moderate inrush. It won't nuisance-trip on start-up, but clears a genuine fault fast. For high-inrush motor loads, a D Curve is the correct selection.

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 use inside 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: When should I use a 25A MCB instead of a 20A?
A: Select 25A when the calculated circuit load or the cable sizing for the circuit exceeds the 20A rating. Common applications include larger commercial HVAC sub-circuits, multi-phase kitchen equipment, and power distribution boards where 20A leaves insufficient margin. Both the MCB3P20 and MCB3P25 share identical construction — only the current rating differs.

Q: Is the Tesla MCB3P25 approved for use in Australian switchboards?
A: Yes. The MCB3P25 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 MCB3P25 accept?
A: The pillar clamp terminal accepts rigid (solid or stranded) copper conductors up to 25mm². This covers the conductor sizes typically associated with a 25A three-phase circuit in commercial and industrial switchboard applications.