ABB S282UC-K10 Miniature Circuit Breaker

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1. Key Parameters

   Parameter	Details
   Core Specifications	2-pole configuration, rated current of 10A, K-curve tripping characteristic which is suitable for inductive load circuits and can tolerate the inrush current of equipment such as motors.
   Voltage & Breaking Capacity	AC voltage up to 400V, DC voltage up to 440V (when connected in 2-pole series); breaking capacity is 10kA at 230V AC and 4.5kA at 400V AC, which can quickly cut off fault currents.
   Mechanical Properties	Adopts screw terminals and DIN rail mounting; dimensions are 69mm×35mm×90mm, with an 18mm narrow-width design that saves installation space in distribution boxes.
   Environmental Requirements	Operating temperature range is -25℃~+55℃; protection level is IP20, which can meet the use needs of general industrial and commercial environments; it complies with RoHS and REACH standards.
   Compliance Standards	Conforms to international standards such as IEC/EN 60898, IEC/EN 60947 - 2, as well as Chinese standard GB 10963.1, ensuring reliable and standardized performance.

2. Core Features
   • Dual Protection Mechanism: It is equipped with a thermal - magnetic dual release. The thermal release responds to slow overload faults and cuts off the circuit after a delayed action; the magnetic release can quickly trigger tripping when a sudden short circuit occurs, effectively avoiding equipment damage and fire risks.
   • Dual AC/DC Applicability: It supports both AC and DC circuit scenarios. This versatility eliminates the need to configure different circuit breakers for different power sources, reducing the complexity of equipment procurement and system configuration.
   • Strong Expansion Compatibility: It can be matched with ABB S280 series accessories, such as S2C - AUX auxiliary contacts for remote monitoring of the circuit breaker's on - off status, and S2C - SHT shunt trips for remote tripping operations, adapting to the functional needs of complex control systems.
   • Current Limiting Function: When a short circuit occurs, it can limit the energy passing through the circuit. This prevents excessive current from damaging downstream cables and electrical equipment, further enhancing the safety of the entire power distribution system.
3. Typical Applications
   • Industrial Control Cabinets: It is used to protect auxiliary circuits in automation control cabinets, such as 24V DC power supplies, sensor wiring and module power input circuits, preventing local faults from spreading to core control components.
   • Commercial Electrical Systems: In office buildings, shopping malls and data centers, it is applied to protect lighting circuits, air - conditioning terminal units, as well as small office equipment like printers and servers from overload or short - circuit problems.
   • Small - Power Industrial Equipment: It provides protection for single - phase small motors, such as 0.75kW fans and 1.5kW water pumps, and electrical heating equipment, ensuring the safe and stable operation of small - power auxiliary equipment in the production process.
4. Usage Precautions
   • Match Load Types: The K - curve is specially designed for inductive loads. It is not suitable for resistive load - dominated circuits. Misuse may lead to false tripping or failure to trip in time.
   • Correct Installation: Strictly follow the DIN rail mounting requirements to ensure firm installation. Poor contact may cause poor heat dissipation or unstable circuit connection.
   • Accessory Matching: When selecting matching accessories, priority should be given to ABB's original accessories to avoid compatibility problems affecting the normal operation of functions such as remote control and status monitoring.

The structure and details of the product：

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