Gewiss’s protection system comprises products which have synergy and perfect integration among each other, such as the innovative 90 ReStart range (automatic reclosing devices), the 90 MCB and 90 RCD ranges (modular circuit breaker for circuit and residual current protection) and the 47 CVX range (metal distribution boards).
An integrated range of products which can meet every need according to the application type, from residential to the industrial and which can guarantee quality and safety in step with market requirements. The advantages of GEWISS system are several, practical compatibility of homogenous products, simple and quick planning, installation and maintenance of the system, as well as modern and stylish design.

90 ReStart
90 ReStart devices restore power supply quickly from automatic circuit breaker trips, but only after checking the system status. In addition, the Autotest function periodically tests the functioning of the residual current circuit breaker protection without disconnecting the system from the power supply. The range includes two pole and four pole versions.
90 MCB
The 90 Miniature Circuit Breaker (MCB) range is made up of three types;
- MTC - Compact miniature circuit breakers, from 2 to 32 A in B and C curve and breaking capacity up to 10 kA
- MT - Traditional miniature circuit breakers, from 1 to 63 A in B, C and D curve and breaking capacity up to 25 kA
- MTHP - High performance miniature circuit breakers, from 20 to 125 A in C and D curve and breaking capacity up to 25 kA
90 RCD
The 90 RCD range includes the MDC monobloc compact residual current circuit breaker with overcurrent protection, the BD and BDHP add-on modular residual current devices for MT and MTHP miniature circuit breakers and the SD residual current circuit breaker.
The 90 AM range consists of auxiliaries for circuit breakers and many modular accessories for protection, command, programming, measurement and signalling in electric systems.
The LST surge protection range guarantees excellent protection of loads and power distribution systems. The range includes:
- LST surge protection devices
- Disconnectable fuse holders
- Residual current relay with separate toroid
- Motor protection switches
47 CVX
The 47 CVX range of Distribution boards are available in both modular and monobloc systems from 160 A to 3 200 A. Available in both surface or flush mounting types, these boards are available in a variety of IP ratings to suit most applications. Thanks to the extractable frame and quick connection of brackets, rails and functional profiles, the 160 A board allows quick assembly. Because the 630 A boards are based on a ‘completely open structure’, board wiring operations are quick and easy.
Enquiries: ACDC Dynamics. Nelen Govender. Tel. 010 202 3300 or email neleng@acdc.co.za
