Tesla MCB1P100 Circuit Breaker 100 Amp 240V Single Pole 10kA Rating C Curve

Description

Serious breaking capacity for demanding boards.

The Tesla MCB1P100 is a single pole miniature circuit breaker rated 100A at 240V with 10kA breaking capacity. Its C curve characteristic suits most general applications, and lift-up pillar terminals accept flexible conductors up to 35mm2.

Key Features

• Rated current: 100A
• Breaking capacity: 10kA
• Single pole
• Rated voltage: 240V AC
• Rated frequency: 50/60Hz
• C curve characteristic
• Conductor capacity up to 35mm2 flexible
• Lift-up pillar terminals with clamp
• Limitation class 3
• 27mm modular spacing
• IEC/EN 60898 standard

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Why it Matters

10kA Where Fault Levels Are Higher
Breaking capacity is what a device can safely interrupt under fault conditions. At 10kA this MCB is rated well above common domestic devices, which is why Tesla specifies the range for commercial, domestic and industrial applications. Where prospective fault current at the board is elevated, a 10kA device gives margin that a 6kA unit does not. Selecting on breaking capacity as well as current rating is what keeps the device within its limits when a fault actually occurs, rather than only under normal load.

Terminals Built for Large Conductors
A 100A device only performs as well as its terminations. This breaker takes flexible conductors up to 35mm2 into lift-up pillar terminals with a clamp, so every cable strand is locked in rather than pinched by a screw. Tesla describes these as safer no hot spot terminals, which matters on a high-current connection expected to carry load continuously. Loose or partially captured strands are a common source of heating at this end of the current range, so the terminal design is not a trivial detail. Fast closure and reliable DC braking per pole round out the mechanism.

C Curve for General Use
The C curve sits between the sensitive B curve and the high-inrush D curve. It tolerates moderate starting surges without nuisance tripping while still protecting the circuit, which makes it the practical default for mixed loads on a general distribution board. Choosing the curve to match the load profile avoids the two failure modes electricians know well: a breaker that trips on every start, or one that is too slow to protect the cable.

Plan the Board Width
At 27mm modular spacing, a single pole of this breaker is wider than a standard module position, so allow for it when laying out the board. The three pole version of the same range is 81mm, which confirms the 27mm per pole figure. Knowing this before you order avoids discovering at fit-off that the enclosure is a position short.

Limiting What Gets Through
Limitation class 3 indicates the device limits let-through energy during a fault. In practice that reduces the thermal and magnetic stress passed on to downstream cable and connected equipment in the moments before the fault clears, which is part of why the device is suited to boards where fault energy is a real consideration.

What is the breaking capacity of the MCB1P100?
It has a 10kA breaking capacity conforming to IEC 60947-2, rated at 240V.

What size cable can this circuit breaker accept?
The terminals accept flexible conductors up to 35mm2, using lift-up pillar terminals with a clamp so all strands are locked in.

How much space does it take on the DIN rail?
The single pole version has 27mm modular spacing. The equivalent three pole device in the range is 81mm.

Warranty

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