Selective circuit breaker ETIMAT SM 3P E32 002129101

Selective overcurrent switch – protection of installations and devices

This three-pole overcurrent switch with characteristic E is a key element of electrical protection in residential, commercial and industrial buildings. It provides reliable protection against overloads and short circuits, minimizing the risk of damage to installations and connected devices. It is designed for mounting on a DIN rail, which facilitates its integration with existing switchboards.

Construction and application

The ETIMAT SM 3P E32 switch is designed for selectivity, which means that in the event of a short circuit in the circuit, only this switch, which is closest to the fault location, will trip, while the remaining circuits remain protected. The E characteristic means that the switch reacts more slowly to short-term current surges, which is particularly important when protecting circuits with devices with high inrush current – e.g. motors. The rated current of 32A and voltage of 400V make it suitable for protecting typical lighting and socket circuits.

Selective switches are widely used in:

• Electrical installations in residential buildings: Protection of lighting, socket circuits and receivers with high inrush current.
• Electrical installations in commercial buildings: Protection against failures in offices, shops and other public utility facilities.
• Industrial installations: Protection of machines and equipment requiring high reliability.
• Main and sub-distribution boards: Integration with existing protection systems.

Key features and parameters

The ETIMAT SM 3P E32 switch is distinguished by its solid construction and high technical parameters:

• Rated current: 32 A – provides adequate protection for most standard circuits.
• Rated voltage: 400 V – compatibility with typical three-phase installations.
• Tripping characteristic: E – ideal for protecting circuits with devices with high inrush current (e.g. motors).
• Rated switching capacity: 25 kA – high resistance to the effects of short circuits.
• Surge category: 4 – provides protection against overvoltages in installations with a voltage of up to 690V.
• Protection degree (IP): IP20 – protection against touching with a finger and solid objects larger than 12.5 mm.
• Mounting method: DIN rail – easy and quick mounting in the switchboard.
• Number of poles: 3 - provides full protection for a three-phase electrical circuit.
• Rated insulation voltage Ui: 690 V - high insulation guarantees safety of use.
• Pollution degree: 3 - resistance to dust and moisture in an industrial or commercial environment.

Thanks to these features, this switch is a reliable solution for professionals and users who require a high level of safety and protection of the electrical installation.