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Service Breakers
Service breakers, also known as molded case circuit breakers (MCCBs) or open frame circuit breakers, are essential protective devices designed to automatically interrupt electrical circuits when current exceeds a predetermined value due to overloads or short circuits. Unlike fuses, these devices are reusable; after a fault, they can be reset man...
Service breakers, also known as molded case circuit breakers (MCCBs) or open frame circuit breakers, are essential protective devices designed to automatically interrupt electrical circuits when current exceeds a predetermined value due to overloads or short circuits. Unlike fuses, these devices are reusable; after a fault, they can be reset manually or electrically without replacement. Key technical specifications include rated current (In) ranging from 16A to 1600A, number of poles (1P, 2P, 3P, 4P), breaking capacity (Icu/Ics) up to 150kA at 415V AC, and rated operational voltage (Ue) up to 690V AC. They feature adjustable thermal-magnetic or electronic trip units, auxiliary contacts, shunt trips, undervoltage releases, and motor operators for remote control. Mounting options include fixed, plug-in, or draw-out configurations, with accessories like door flanges, rotary handles, and DIN rail adapters for panel integration.
These circuit breakers are deployed across industrial, commercial, and residential sectors for distribution panels, motor control centers (MCCs), switchboards, and main service entrances. They protect cables, motors, transformers, and generators in applications such as manufacturing plants, data centers, HVAC systems, and renewable energy installations like solar farms. Their robust design ensures reliable operation in harsh environments, with IP ratings up to IP54 for dust and moisture resistance.
Service breakers comply with international standards including IEC 60947-2, UL 489, and NEMA AB-1, ensuring global acceptance. They are compatible with major brands like ABB, Siemensand Eaton, allowing seamless integration into existing systems. Accessories such as mechanical interlocks, padlock devices, and terminal shrouds enhance safety and functionality.
At Electric Automation Network, we offer a comprehensive range of service breakers with real-time pricing, detailed technical documentation, and express worldwide shipping. Our team of specialized engineers provides personalized support for selection, configuration, and troubleshooting, ensuring optimal protection for your electrical installations.
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