Circuit Breakers
![Circuit breaker for transformer protection, Rotary actuator, 3 pole, 0.16 A, 690 V, (W x H x D) 45 x 97 x 97 mm, DIN rail, 3RV2411-0AA10](/en/images/ecf/G-NSA0-XX-93050P/95x95/circuit-breaker-for-transformer-protection-rotary-actuator-3-pole-0-16-a-690-v-w-x-h-x-d-45-x-97-x-97-mm-din-rail-3rv2411-0aa10.png)
![Circuit breaker for transformer protection, Rotary actuator, 3 pole, 0.16 A, 690 V, (W x H x D) 45 x 97 x 97 mm, DIN rail, 3RV2411-0AA15](/en/images/0d0/G-NSA0-XX-93053P/95x95/circuit-breaker-for-transformer-protection-rotary-actuator-3-pole-0-16-a-690-v-w-x-h-x-d-45-x-97-x-97-mm-din-rail-3rv2411-0aa15.png)
![Circuit breaker for transformer protection, Rotary actuator, 3 pole, 0.16 A, 690 V, (W x H x D) 45 x 106 x 97 mm, DIN rail, 3RV2411-0AA20](/en/images/ac8/G-NSA0-XX-93056P/95x95/circuit-breaker-for-transformer-protection-rotary-actuator-3-pole-0-16-a-690-v-w-x-h-x-d-45-x-106-x-97-mm-din-rail-3rv2411-0aa20.png)
![Circuit breaker for transformer protection, Rotary actuator, 3 pole, 0.16 A, 690 V, (W x H x D) 45 x 97 x 97 mm, DIN rail, 3RV2421-0AA10](/en/images/349/G-NSA0-XX-93065P/95x95/circuit-breaker-for-transformer-protection-rotary-actuator-3-pole-0-16-a-690-v-w-x-h-x-d-45-x-97-x-97-mm-din-rail-3rv2421-0aa10.png)
![Circuit breaker for transformer protection, Rotary actuator, 3 pole, 16 A, 690 V, (W x H x D) 45 x 97 x 97 mm, DIN rail, 3RV2421-4AA10](/en/images/349/G-NSA0-XX-93065P/95x95/circuit-breaker-for-transformer-protection-rotary-actuator-3-pole-16-a-690-v-w-x-h-x-d-45-x-97-x-97-mm-din-rail-3rv2421-4aa10.png)
![Circuit breaker for transformer protection, Rotary actuator, 3 pole, 16 A, 690 V, (W x H x D) 45 x 97 x 97 mm, DIN rail, 3RV2421-4AA15](/en/images/2f1/G-NSA0-XX-93068P/95x95/circuit-breaker-for-transformer-protection-rotary-actuator-3-pole-16-a-690-v-w-x-h-x-d-45-x-97-x-97-mm-din-rail-3rv2421-4aa15.png)
![Circuit breaker for transformer protection, Rotary actuator, 3 pole, 16 A, 690 V, (W x H x D) 45 x 119 x 97 mm, DIN rail, 3RV2421-4AA20](/en/images/496/G-NSA0-XX-93071P/95x95/circuit-breaker-for-transformer-protection-rotary-actuator-3-pole-16-a-690-v-w-x-h-x-d-45-x-119-x-97-mm-din-rail-3rv2421-4aa20.png)
![Circuit breaker for transformer protection, Rotary actuator, 3 pole, 20 A, 690 V, (W x H x D) 55 x 140 x 149 mm, DIN rail, 3RV2431-4BA10](/en/images/b23/G-IC03-XX-08848P/95x95/circuit-breaker-for-transformer-protection-rotary-actuator-3-pole-20-a-690-v-w-x-h-x-d-55-x-140-x-149-mm-din-rail-3rv2431-4ba10.png)
![Circuit breaker for system protection, Rotary actuator, 3 pole, 0.16 A, 690 V, (W x H x D) 45 x 144 x 97 mm, DIN rail, 3RV2711-0AD10](/en/images/d61/G-NSA0-XX-93095P/95x95/circuit-breaker-for-system-protection-rotary-actuator-3-pole-0-16-a-690-v-w-x-h-x-d-45-x-144-x-97-mm-din-rail-3rv2711-0ad10.png)
![Circuit breaker for system protection, Rotary actuator, 3 pole, 20 A, 690 V, (W x H x D) 45 x 144 x 97 mm, rail mounting, 3RV2721-4BD10](/en/images/9b0/G-NSA0-XX-01399P/95x95/circuit-breaker-for-system-protection-rotary-actuator-3-pole-20-a-690-v-w-x-h-x-d-45-x-144-x-97-mm-rail-mounting-3rv2721-4bd10.png)
![Circuit breaker for system protection, Rotary actuator, 3 pole, 10 A, 690 V, (W x H x D) 70 x 170 x 176 mm, rail mounting, 3RV2742-5AD10](/en/images/e4d/G-IC03-XX-18851P/95x95/circuit-breaker-for-system-protection-rotary-actuator-3-pole-10-a-690-v-w-x-h-x-d-70-x-170-x-176-mm-rail-mounting-3rv2742-5ad10.png)
![Circuit breaker for transformer protection, Rotary actuator, 3 pole, 0.16 A, 690 V, (W x H x D) 45 x 144 x 97 mm, rail mounting, 3RV2811-0AD10](/en/images/d61/G-NSA0-XX-93095P/95x95/circuit-breaker-for-transformer-protection-rotary-actuator-3-pole-0-16-a-690-v-w-x-h-x-d-45-x-144-x-97-mm-rail-mounting-3rv2811-0ad10.png)
![Circuit breaker for transformer protection, Rotary actuator, 3 pole, 20 A, 690 V, (W x H x D) 45 x 144 x 97 mm, rail mounting, 3RV2821-4BD10](/en/images/9b0/G-NSA0-XX-01399P/95x95/circuit-breaker-for-transformer-protection-rotary-actuator-3-pole-20-a-690-v-w-x-h-x-d-45-x-144-x-97-mm-rail-mounting-3rv2821-4bd10.png)
![Load-break switch, Rotary actuator, 3 pole, 40 A, (W x H x D) 70 x 165 x 176 mm, DIN rail, 3RV2041-4FA10-0DA0](/en/images/84a/G-IC03-XX-18849P/95x95/load-break-switch-rotary-actuator-3-pole-40-a-w-x-h-x-d-70-x-165-x-176-mm-din-rail-3rv2041-4fa10-0da0.png)
![Circuit breaker with start protection (300-1500 A), toggle actuator, 3 pole, 100 A, 800 V, (W x H x D) 105 x 198 x 86 mm, DIN rail, 3VA6110-1MS31-0AA0](/en/images/b75/G-I202-XX-35802P/95x95/circuit-breaker-with-start-protection-300-1500-a-toggle-actuator-3-pole-100-a-800-v-w-x-h-x-d-105-x-198-x-86-mm-din-rail-3va6110-1ms31-0aa0.png)
![Circuit breaker for system protection, toggle actuator, 3 pole, 250 A, 800 V, (W x H x D) 105 x 198 x 86 mm, DIN rail, 3VA6225-6HM31-0AA0](/en/images/2f0/G-I202-XX-35745P/95x95/circuit-breaker-for-system-protection-toggle-actuator-3-pole-250-a-800-v-w-x-h-x-d-105-x-198-x-86-mm-din-rail-3va6225-6hm31-0aa0.png)
![Circuit breaker, toggle actuator, 3 pole, 60 A, 800 V, (W x H x D) 81 x 137 x 80 mm, DIN rail, BDF36060](/en/images/249/PP-B-UM3-std-REP-DA21/95x95/circuit-breaker-toggle-actuator-3-pole-60-a-800-v-w-x-h-x-d-81-x-137-x-80-mm-din-rail-bdf36060.png)
![Pole-changing switch, Rotary actuator, 3 pole, 20 A, 690 V, (W x H) 45 x 45 mm, front mounting, K2H004P](/en/images/c83/K1-K2-638-CPODA2016002/95x95/pole-changing-switch-rotary-actuator-3-pole-20-a-690-v-w-x-h-45-x-45-mm-front-mounting-k2h004p.png)
![Cam-operated switch, Rotary actuator, 4 pole, 20 A, 690 V, (W x H) 45 x 45 mm, front mounting, K2H004U](/en/images/c83/K1-K2-638-CPODA2016002/95x95/cam-operated-switch-rotary-actuator-4-pole-20-a-690-v-w-x-h-45-x-45-mm-front-mounting-k2h004u.png)
![Switch block, Rotary actuator, 4 pole, 20 A, 690 V, (W x H x D) 45 x 50 x 79 mm, front mounting, K2H004UCH](/en/images/62a/K1-K2-638-CPODA2016031/95x95/switch-block-rotary-actuator-4-pole-20-a-690-v-w-x-h-x-d-45-x-50-x-79-mm-front-mounting-k2h004uch.png)
Safety guaranteed: Functions and advantages of switch-disconnectors
Circuit breakers are used to protect electrical circuits by automatically switching off in the event of an overload or short circuit. They can be switched back on, eliminating the need for one-way fuses. Switch-disconnectors, on the other hand, specialize in safely isolating electrical circuits from the power supply.
Unlike circuit breakers, switch-disconnectors do not perform a protective function, but merely ensure safe isolation as well as prevention of accidental switch-on. Both electromechanical components are indispensable in electrical installations and in the energy sector, with circuit-breakers primarily ensuring the protection of installations, while switch-disconnectors are used for maintenance and repairs.