Circuit Breakers
![3LD2418-7UL01 Siemens Circuit Breakers](/en/images/eaa/G-I202-XX-32034P/95x95/changeover-switch-rotary-actuator-4-pole-250-a-690-v-w-x-h-x-d-299-x-149-x-94-mm-front-mounting-3ld2418-7ul01.webp)
![3LD5600-0TL11 Siemens Circuit Breakers](/en/images/5c3/G-I202-XX-55735P/95x95/main-switch-rotary-actuator-4-pole-125-a-690-v-w-x-h-x-d-151-x-178-x-158-mm-3ld5600-0tl11.webp)
![3NP1133-1CA13 Siemens Circuit Breakers](/en/images/f2a/G-I202-XX-52880P/95x95/fuse-load-break-switch-cover-handle-3-pole-160-a-690-v-w-x-h-x-d-105-8-x-202-x-126-2-mm-mounting-plate-3np1133-1ca13.webp)
![3KC4346-0EA21-0AA3 Siemens Circuit Breakers](/en/images/4a5/G-I202-XX-34312P/95x95/mains-switch-rotary-actuator-3-pole-630-a-1000-v-w-x-h-x-d-377-x-260-x-368-5-mm-screw-mounting-3kc4346-0ea21-0aa3.webp)
![3LD2524-7UK01 Siemens Circuit Breakers](/en/images/1b2/G-I202-XX-31942P/95x95/changeover-switch-rotary-actuator-3-pole-63-a-690-v-w-x-h-x-d-121-x-85-x-118-5-mm-front-mounting-3ld2524-7uk01.webp)
![3NP5360-0CA00 Siemens Circuit Breakers](/en/images/cd2/P-NSE0-XX-00054P/95x95/fuse-load-break-switch-cover-handle-3-pole-400-a-690-v-w-x-h-x-d-231-x-300-x-192-mm-mounting-plate-3np5360-0ca00.webp)
![3LD2586-5VD21 Siemens Circuit Breakers](/en/images/e63/G-I202-XX-55526P/95x95/repair-switch-rotary-actuator-6-pole-63-a-690-v-w-x-h-x-d-212-x-302-x-181-mm-front-mounting-3ld2586-5vd21.webp)
![3LD2305-1TL13 Siemens Circuit Breakers](/en/images/894/G-I202-XX-32944P/95x95/emergency-stop-load-break-switch-rotary-actuator-4-pole-160-a-690-v-w-x-h-x-d-112-x-169-x-94-mm-front-mounting-3ld2305-1tl13.webp)
![3NP5360-0EA86 Siemens Circuit Breakers](/en/images/a5c/P-NSE0-XX-00497P/95x95/fuse-load-break-switch-cover-handle-3-pole-400-a-690-v-w-x-h-x-d-231-x-300-x-192-mm-mounting-plate-3np5360-0ea86.webp)
![3NP5260-0CB00 Siemens Circuit Breakers](/en/images/df0/P-NSE0-XX-00053P/95x95/fuse-load-break-switch-cover-handle-3-pole-250-a-690-v-w-x-h-x-d-207-x-300-x-176-mm-mounting-plate-3np5260-0cb00.webp)
![3NP1153-1JC13 Siemens Circuit Breakers](/en/images/475/G-I202-XX-53161P/95x95/fuse-load-break-switch-cover-handle-3-pole-400-a-690-v-w-x-h-x-d-209-4-x-306-x-183-6-mm-busbar-3np1153-1jc13.webp)
![3KC0340-0PE00-0AA0 Siemens Circuit Breakers](/en/images/076/G-I202-XX-35324P/95x95/mains-switch-3-pole-315-a-1000-v-w-x-h-x-d-235-x-164-x-197-2-mm-screw-mounting-3kc0340-0pe00-0aa0.webp)
![3LD2330-0TK13 Siemens Circuit Breakers](/en/images/ebb/G-I202-XX-31946P/95x95/emergency-stop-load-break-switch-rotary-actuator-3-pole-160-a-690-v-w-x-h-x-d-112-x-169-x-94-mm-din-rail-3ld2330-0tk13.webp)
![3LD5020-0TK11 Siemens Circuit Breakers](/en/images/749/G-I202-XX-55823P/95x95/main-switch-rotary-actuator-3-pole-32-a-690-v-w-x-h-x-d-60-x-96-x-59-mm-front-mounting-3ld5020-0tk11.webp)
![3KC0326-2ME00-0AA0 Siemens Circuit Breakers](/en/images/559/G-I202-XX-35358P/95x95/mains-switch-3-pole-63-a-1000-v-w-x-h-x-d-201-6-x-119-x-84-5-mm-screw-mounting-din-rail-3kc0326-2me00-0aa0.webp)
![3NP1131-1CA10 Siemens Circuit Breakers](/en/images/120/G-I202-XX-44011P/95x95/fuse-load-break-switch-cover-handle-1-pole-160-a-690-v-w-x-h-x-d-41-8-x-202-x-86-2-mm-mounting-plate-3np1131-1ca10.webp)
![3KC0450-0RE00-0AA0 Siemens Circuit Breakers](/en/images/efc/G-I202-XX-35329P/95x95/mains-switch-4-pole-1000-a-1000-v-w-x-h-x-d-565-x-310-x-311-5-mm-screw-mounting-3kc0450-0re00-0aa0.webp)
![3LD5200-0TL13 Siemens Circuit Breakers](/en/images/d55/G-I202-XX-56017P/95x95/emergency-stop-load-break-switch-rotary-actuator-4-pole-63-a-690-v-w-x-h-x-d-93-x-106-x-95-mm-din-rail-3ld5200-0tl13.webp)
![3NP5065-1CF10 Siemens Circuit Breakers](/en/images/25c/P-NSE0-XX-00052P/95x95/fuse-load-break-switch-cover-handle-3-pole-160-a-690-v-w-x-h-x-d-134-x-196-x-115-5-mm-busbar-3np5065-1cf10.webp)
![3NP1163-1JC13 Siemens Circuit Breakers](/en/images/094/G-I202-XX-22318P/95x95/fuse-load-break-switch-cover-handle-3-pole-630-a-690-v-w-x-h-x-d-249-4-x-306-x-192-7-mm-busbar-3np1163-1jc13.webp)
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.