Timeguard TX2340C 40A 6KA Type C Curve MCB

The Timeguard TX2340C 40A C-curve MCB provides overload and short-circuit protection for an individual electrical circuit. Designed specifically for Timeguard TX series consumer units, this single-pole miniature circuit breaker has a 6kA breaking capacity and occupies one module.

It is an option for electricians selecting protective devices for a compatible installation or replacing an existing breaker where the circuit requires 40A C-curve protection.

Understanding the C-curve characteristic

A C-curve MCB has a higher instantaneous magnetic operating threshold than an equivalent B-curve device. This can accommodate brief starting currents where the connected equipment and circuit design support its use.

The current rating remains 40A. Selecting C-curve does not increase the circuit’s permitted continuous load. Cable protection, equipment characteristics and the fault current needed to achieve the required disconnection time must all be considered.

Practical terminal and maintenance features

The terminal cages include blanking plates that help prevent a cable or busbar from being inserted outside the clamp. Maximum terminal capacity is 25mm², with a manufacturer-specified tightening torque of 2.5Nm.

A contact position indicator provides a visible indication of contact status. The breaker can also be removed without removing the busbar, helping with maintenance once the consumer unit has been safely isolated.

Compact fitting and a five-year guarantee

Measuring 18mm wide × 81mm high × 73mm deep, the breaker mounts onto a 35mm DIN rail. Timeguard provides a five-year guarantee, subject to its applicable terms.

Check the complete code before ordering: TX2340C is C-curve, while TX2340 is B-curve. Manufacturer compatibility is limited to Timeguard TX series consumer units.

Where residual-current protection is required, an appropriate RCD or RCBO arrangement must also form part of the installation design.