Modular apparatus

At the Onninen electrical wholesaler, professionals and individual customers can stock up on all the necessary electrical equipment – including modular equipment that guarantees the safety of electrical installations, protecting them from short circuits and overloads. Our range includes thousands of devices. We offer, among others, residual current circuit breakers, overcurrent circuit breakers, surge arresters, disconnectors, contactors, and rails and bridging blocks. See the products available in this category.

Application of modular equipment

Modular equipment is used to connect, control and protect electrical installations against overvoltage, overheating and short circuit. It contributes to the safe and trouble-free operation of the system. It has a wide range of applications. It is used in residential buildings, as well as in offices and industrial plants. The modular equipment includes various types of devices and accessories intended for installation in switchboards.

Surge arresters

Surge arresters (also known as surge protectors or surge arresters) are devices designed to protect electrical and electronic equipment from the effects of surges. A surge can occur as a result of lightning strikes or power grid failures. A surge arrester reduces excessive voltage. Cut-off, limiting and combined surge arresters are available. Our range includes surge arresters from manufacturers such as Citel, Dehn, Eaton, Eti, Obo Bettermann, Legrand and Schneider Electric.

Circuit breakers

Circuit breakers are used to protect electrical installations from the effects of short circuits and overloads and to protect people from electric shock. In a dangerous situation, the circuit breaker ensures the interruption of the circuit continuity. We offer circuit breakers from Abb, Eaton, Eti, Hager, Legrand, Schneider Electric and other proven brands.

Differential circuit breakers

Differential circuit breakers (RCDs) provide protection against electric shock and damage to devices. Their task is to automatically switch off the power supply when the current flowing out of the circuit has a different value than the current flowing in. In our shop you will find high-quality RCDs from leading manufacturers and brands of modular equipment, such as: Abb, Eaton, Eti, Hager, Kessel, Legrand or Schneider Electric. Our assortment also includes RCDs with an overcurrent element.

Power rails

The current rail (also known as a comb rail/strip) is used to allocate individual modules in the switchboard. It helps avoid tangling wires, manual bridges and the use of many cables and terminals. It acts as a mounting strip, enabling the mounting of electrical equipment in switchboards. Our offer includes short and long current rails, single and multi-row from leading manufacturers in the industry, such as Eaton, Eti, Hager and ELEKTRO-PLAST Opatówek. Are you looking for the right modular equipment? We invite you to familiarize yourself with the full offer of the Onninen.pl online electrical store and to take advantage of our professional advice.