Tesla MCB10K3P32 Miniature Circuit Breaker 32 Amp Three Pole 10kA C Curve DIN Rail or Chassis Mount

Description

Full 10 kA capacity across all three poles.

Where a board calls for a 10 kA device, the headline number is only half the story. The Tesla MCB10K3P32 is a three pole, 32 amp miniature circuit breaker rated at a full 10 kA short circuit capacity, with C curve tripping and Energy Limiting Class 3 performance.

Key Features

• Rated current: 32A
• Number of poles: 3 pole
• Tripping curve: C
• Short circuit capacity: 10kA
• Icn equal to Ics at the full 10 kA rating
• Energy Limiting Class 3
• Protection against overload and short circuit
• Function of isolation
• Contact position indication
• DIN and chassis mount
• Sold individually, box quantity of 4, carton quantity of 40

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Why Icn Equals Ics Matters

Two breaking capacity figures are published for a miniature circuit breaker, and they are not the same thing. Icn is the ultimate capacity, the largest fault current the device can interrupt at all. Ics is the service capacity, the largest fault it can interrupt and then remain in service afterwards.

On many breakers Ics is only a fraction of Icn. A severe fault is cleared safely, but the device has reached the end of its useful life in the process and should be swapped out. On the MCB10K3P32 the two figures are equal at 10 kA, so the full rated capacity is also the figure the breaker can take and keep operating at.

Tesla also specifies Energy Limiting Class 3 for this range, the top of the three energy limiting classes. The measure describes how much let-through energy reaches downstream conductors and equipment in the time it takes the contacts to part. A lower let-through figure means less thermal and electromagnetic stress carried into the circuit beyond the breaker.

Three Pole Protection and Isolation

All three poles trip together, so a fault detected on any one phase disconnects the entire circuit. That behaviour matters on three phase equipment in Australian switchboards, where leaving a load energised on the remaining phases risks damage.

Tesla lists the function of isolation for this range, alongside contact position indication. Between them, the state of the contacts is shown rather than inferred from the handle position alone.

Mounting and Range

The MCB10K3P32 is listed for both DIN rail and chassis mounting. That gives two installation routes from a single part number rather than requiring a different device depending on how the board is built.

The three pole 10 kA family runs at 6, 10, 16, 20, 25, 32, 40, 50 and 63 amps, so a board can be populated at consistent breaking capacity from a single family. Pole configurations across the wider 10 kA range are listed in the specification table below. Supply is one unit per order, with a box quantity of 4 and a carton quantity of 40.

What is the breaking capacity of the Tesla MCB10K3P32?
The short circuit capacity is 10 kA, and Icn is equal to Ics at that figure. That means the breaker is rated to interrupt a full 10 kA fault and remain in service afterwards. It also carries Energy Limiting Class 3.

Can the Tesla MCB10K3P32 be chassis mounted?
Yes. Tesla lists this 10 kA range as both DIN and chassis mount, so it can be installed on standard DIN rail or fixed directly to a chassis where no rail is fitted.

Does the Tesla MCB10K3P32 provide isolation?
Yes. Tesla lists a function of isolation for this range, along with contact position indication so the actual contact state is visible rather than inferred from the handle position.

Warranty

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