Tesla MCB2P20 Circuit Breaker 20 Amp 250V 2 Pole 6kA C Curve DIN Rail

Description

Two pole protection with a proven 6 kA core.

Final subcircuits and appliance loads need overload and short-circuit protection that isolates both live and neutral together. The Tesla MCB2P20 is a two pole 20 amp C curve miniature circuit breaker rated at 6 kA, built on the HPC2 series with pillar terminals taking rigid conductor up to 25 mm².

Key Features

• 20 A rated current, two pole
• 6 kA (6000 A) breaking capacity
• C curve tripping characteristic
• Bi-metal thermal element for overload tripping
• Magnetic element for short-circuit tripping
• Overload and short-circuit protection
• Pillar terminal with clamp
• Rigid conductor capacity up to 25 mm²
• Two module DIN rail width
• 50/60 Hz rated frequency
• IP20 rated
• Designed to IEC/EN 60898
• Mechanical life 10,000 cycles, electrical life 4,000 cycles
• Tesla HPC2 series, GTS code TMCB2P20
• Sold singly, box of 6, carton of 60

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Why Two Pole

A two pole breaker switches both conductors of the circuit at once. When it trips, or when it is opened by hand, both poles break together, so the circuit is fully disconnected rather than left with one conductor still live.

That full disconnection is the reason two pole devices are specified where a circuit needs to be positively isolated for work, or where both conductors should be broken together on a fault. The two poles share a single operating toggle, so it stays simple to switch while still acting on both conductors at the same instant.

C Curve and the 6 kA Rating

The C curve tripping characteristic sits between B and D. It tolerates the brief inrush that many loads draw when first switched on, while still clearing a sustained overload or a short circuit. Two separate mechanisms handle those two jobs.

The bi-metal thermal element deals with overload. It heats and bends in proportion to the current, so a small sustained overload trips slowly while a large one trips faster. The magnetic element handles the short circuit, tripping almost instantly on the very high current a fault produces.

The 6 kA breaking capacity is the largest fault current the device can interrupt safely. It suits the prospective fault levels seen on a wide range of commercial, domestic and industrial final circuits, which is exactly where Tesla positions the HPC2 range.

Terminals, Mounting and Life

The pillar terminals clamp rigid conductor up to 25 mm², so the breaker lands the cable a 20 amp circuit is likely to use without an interposing connection. The clamp bears on the conductor rather than the screw thread, which keeps the contact pressure even.

The body takes two modules on standard DIN rail and carries an IP20 rating, suiting it to an enclosed board. Tesla rates the mechanism at 10,000 mechanical operations and 4,000 electrical operations, a life figure that reflects normal switching and periodic testing across the working life of a board. The unit is built to IEC/EN 60898 under approval V08030.

Q: How many poles does the Tesla MCB2P20 switch?
A: Two. It breaks both conductors of the circuit together on a trip or when switched by hand, giving full disconnection rather than breaking one pole only.

Q: What is the breaking capacity of the Tesla MCB2P20?
A: It is rated at 6 kA, that is 6000 A. Tesla positions the HPC2 6 kA range for commercial, domestic and industrial applications.

Q: What cable size do the terminals take?
A: The pillar terminals with clamp accept rigid conductor up to 25 mm². The breaker takes two modules on DIN rail, is IP20 rated and is designed to IEC/EN 60898.

Warranty

This product is backed by an extended manufacturer warranty - click here for details.