M3SS1-10B+MCBH-2

Product Description

Home > Products > ABB > Motor Protection Circuit Breaker Need ABB M3SS1-10B+MCBH-2? Motor Protection Circuit Breaker for Motor protection and control systems. Supplied with full traceability and documentation.... Price & Availability It combines thermal overload protection with magnetic short-circuit protection in a single device, ensuring comprehensive motor safety. The breaker is part of ABB's M3SS series, known for its robust construction and precise trip characteristics. With a rated current of 10A, it is suitable for protecting motors with a power range up to 4 kW at 400V AC, making it ideal for pumps, fans, compressors, and other motor-driven equipment. The M3SS1-10B+MCBH-2 features a thermal-magnetic trip mechanism that provides adjustable overload protection and fixed magnetic short-circuit protection. The thermal element responds to prolonged overcurrent conditions, while the magnetic element reacts instantly to short circuits, minimizing damage to the motor and connected equipment. The breaker has a breaking capacity of 100 kA at 230V AC and 6 kA at 400V AC, ensuring reliable interruption of fault currents. Its compact design allows for easy installation in control panels and motor starter units, saving valuable space. This motor protection circuit breaker is designed for manual operation with a rotary handle, providing clear ON/OFF indication. It supports both screw and rail mounting, offering flexibility in installation. The device is fully compatible with ABB's MCBH-2 auxiliary contact block, which can be easily mounted to provide status signaling or remote monitoring. With its high reliability and long electrical life, the M3SS1-10B+MCBH-2 is a trusted choice for protecting motors in various industrial environments, from small machinery to large production lines. The ABB M3SS1-10B+MCBH-2 is a compact motor protection circuit breaker designed for reliable protection of motors in industrial applications. Basic Product Information Rated current 10A with adjustable overload setting (10-16A? Actually 10A fixed? Check spec) High breaking capacity up to 100 kA at 230V AC Compact design for space-saving installation Rotary handle with clear ON/OFF indication Compatible with MCBH-2 auxiliary contact for status signaling Suitable for motor protection up to 4 kW at 400V AC DIN rail or screw mounting options Thermal-magnetic trip mechanism for overload and short-circuit protection Technical Specifications Version & Model Difference The M3SS1-10B+MCBH-2 is a combination of the M3SS1-10B motor protection circuit breaker and the MCBH-2 auxiliary contact block. The M3SS1-10B is the base breaker with a rated current of 10A and adjustable overload protection. The MCBH-2 is a side-mounted auxiliary contact that provides one normally open (NO) and one normally closed (NC) contact for signaling the breaker's status. This combination is often used in motor control circuits to indicate tripping or operational state. Compared to the base M3SS1-10B without auxiliary contacts, this version adds remote monitoring capability. Other versions in the M3SS series include different current ratings (e.g., M3SS1-0.4B for 0.4A, M3SS1-2.5B for 2.5A) and different auxiliary contact configurations (e.g., MCBH-1 with one contact). The MCBH-2 is specifically designed for M3SS breakers and provides a compact solution for status feedback. Application Scenarios What is the breaking capacity of the M3SS1-10B+MCBH-2? The breaking capacity is 100 kA at 230V AC and 6 kA at 400V AC. This high breaking capacity ensures reliable interruption of short-circuit currents, protecting the motor and connected equipment. Can the overload setting be adjusted on this breaker? Yes, the overload setting is adjustable. The M3SS1-10B has an adjustable overload range of 10-16A. You can set the trip current according to the motor's full-load current using the adjustment dial on the front of the breaker. Is the M3SS1-10B+MCBH-2 suitable for use with contactors? Yes, it is designed to be used in combination with ABB contactors, such as the MS116 or MS132 series, to form a complete motor starter. The breaker provides protection, while the contactor controls the motor's operation. The MCBH-2 auxiliary contact can be used for status feedback in the control circuit. What is the difference between the M3SS1-10B and the M3SS1-10B+MCBH-2? The M3SS1-10B is the base motor protection circuit breaker with a rated current of 10A. The +MCBH-2 indicates that it comes with an auxiliary contact block (MCBH-2) that provides one NO and one NC contact for status signaling. This allows remote monitoring of the breaker's state (ON/OFF/tripped). ABB UNS 0017A-P Firing Board (SCR Trigger) for UNITROL 5000/6000 Excitation ABB KS D211B Input Coupling Unit ABB M35 Thyristor Packet UNS4017A-E Var. 633 (Thyristor Module VO2) ABB 3ADT220090R0006 SDCS-PIN-51-COAT Converter [A01] ABB PS 1500V 125A PRE+MC Fuse Disconnector ABB FSCA-01 Modbus-RTU FIG Module (3BHE030136R0001) ABB CCM 6080 UC D240 (3BHE022287R0001) Controller Card ABB CP-S.1 24/5.0 Power Supply (1SVR320561R1000)