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Tripping bloc for power circuit-breaker
Tripping blocks for power circuit-breakers are essential auxiliary components designed to provide overcurrent, short-circuit, and earth fault protection in low and medium voltage electrical installations. These devices integrate directly with molded case circuit breakers (MCCBs) and air circuit breakers (ACBs), offering thermal-magnetic or elect...
Tripping blocks for power circuit-breakers are essential auxiliary components designed to provide overcurrent, short-circuit, and earth fault protection in low and medium voltage electrical installations. These devices integrate directly with molded case circuit breakers (MCCBs) and air circuit breakers (ACBs), offering thermal-magnetic or electronic tripping characteristics. Key technical parameters include rated current ranges from 16A to 6300A, adjustable trip thresholds (Ir, Isd, Ig), and breaking capacities up to 150kA at 415V AC. They are available in fixed or plug-in configurations, with options for shunt releases, undervoltage releases, and auxiliary contacts for remote signaling. The modular design ensures compatibility with standard DIN rail or direct mounting in switchgear panels.
These tripping blocks are deployed across critical sectors including industrial manufacturing plants, commercial building distribution boards, data centers, and renewable energy systems such as solar farms and wind turbines. They are integral to motor control centers (MCCs), power factor correction cabinets, and emergency power systems like UPS and generator sets. In process industries like oil and gas, chemical, and water treatment, they ensure selective coordination and arc flash mitigation. Their robust construction meets IP20 to IP54 protection ratings, suitable for harsh environments with dust, moisture, or vibration.
Within our catalog, subcategories include thermal-magnetic tripping units (e.g., code series TM-XXX for fixed settings) and electronic trip units (e.g., series ETU-XXX with LCD displays and communication protocols like Modbus). Main article codes follow a pattern like "TRB-XXXX-YYY", where XXXX denotes rated current (e.g., 1000A) and YYY indicates trip curve type (e.g., "L" for long-time, "S" for short-time). Popular models include the TRB-630-LSIG for selective protection and TRB-2500-LI for high-current applications. These are complemented by accessories like mechanical interlocks and terminal shrouds.
Partnering with Electric Automation Network ensures access to genuine OEM tripping blocks with real-time pricing and global express shipping. Our team of electrical engineers provides personalized technical support for selection, coordination studies, and commissioning. We supply detailed documentation including time-current curves, wiring diagrams, and compliance certificates (IEC 60947-2, UL 489). Whether you need a single unit for a retrofit or bulk orders for new projects, we guarantee fast delivery and expert guidance to optimize your power distribution reliability.
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