Circuit breaker Icu=50kA 2P C 40A HMX240

Protects circuits with motors and devices with high inrush current without nuisance tripping

Characteristic C allows the circuit breaker to withstand short-term current surges that are normal during the start-up of pumps, compressors, or other motor-driven equipment. It does not trip during start-up but responds effectively to sustained overloads and short circuits—exactly as required by industrial and commercial installations. The rated breaking capacity of 50 kA at 230 V and 400 V indicates it is designed for environments with a high risk of short circuits; this is not a "basic" circuit breaker but one that meets IEC 60947-2 requirements for heavier loads.

Flush mounting—but not only for homes

Designed for DIN 35 mm rail mounting, it fits into standard distribution boards. A width of 3 modules (53 mm) enables efficient space organization within the enclosure. The installation depth of 70 mm is sufficient for most typical flush-mounted distribution boards. Single-core conductors up to 70 mm² and multi-core conductors up to 50 mm²—no additional terminals or adaptations are required. This is not a limitation but a standard for circuit breakers of this class.

Does not disconnect the neutral—and this is correct

It does not feature simultaneous disconnection of the N conductor, meaning it is intended for TN-S or TN-C-S circuits where the neutral conductor is disconnected only at the main isolation point. This is not an error but compliance with IEC 60947-2. There is no need to replace it with a 3P or 4P version simply because it "looks better."

Operates in extreme conditions—without additional restrictions

It operates from -25°C to +70°C, eliminating the need to limit its use in unheated rooms, warehouses, or outdoor enclosures. An IP20 protection rating means it is not intended for humid environments—but this is not an issue, as its intended application is indoors. Energy limitation class 3 and overvoltage category 3 confirm its role as a component of a protection system compliant with standards.

Accessories can be added—but you don't have to

The possibility of additional equipment means you can add a residual current module, manual lock, or terminal cover—if you require status monitoring or operational safety. If not, the circuit breaker operates independently and safely. There is no "outdated design" here—only readiness for expansion.

What ensures trouble-free operation?

Rated insulation voltage Ui = 500 V and impulse withstand voltage Uimp = 6 kV provide resistance to overvoltages and network transients. Pollution degree 3 allows operation in environments with dust or moisture—no special cleanliness is required. A frequency of 50–60 Hz corresponds to the standard European grid. There is nothing excessive here—only precision.