ABB 1SAP250100R0001 Shunt Trip Unit (for Low-Voltage Circuit Breakers)

Description

1SAP250100R0001

The ABB 1SAP250100R0001 functions as an add-on shunt trip unit, designed to mount directly inside compatible ABB low-voltage circuit breakers (such as the Tmax XT or Emax 2 series) to enable remote tripping. Unlike external emergency stop relays that add complexity and potential failure points, it operates as an integral part of the circuit breaker’s mechanism: when a remote signal (typically 24V DC or 110V AC) energizes the unit’s coil, it generates a magnetic force that mechanically triggers the circuit breaker to open—disconnecting power from the load within milliseconds. This integration ensures zero lag between the remote signal and shutdown, critical for mitigating damage during faults.

1SAP250100R0001

The unit supports standard control signals from safety systems (like fire alarms, PLCs, or emergency stop panels), making it easy to integrate into existing safety architectures. By fitting within the circuit breaker’s housing, the ABB 1SAP250100R0001 avoids the need for extra panel space or complex wiring, maintaining a compact footprint while adding a critical safety layer. In the power distribution stack, it bridges the gap between safety control systems and the circuit breaker, ensuring that emergency shutdown commands are executed instantly—protecting equipment, personnel, and processes from harm.

1SAP250100R0001

Main features and advantages:

Choosing the ABB 1SAP250100R0001 delivers tangible value that enhances safety, compliance, and operational efficiency. Engineered for industrial reliability, its coil is encapsulated in flame-retardant material (UL 94 V-0 rated) to withstand high temperatures and prevent fire spread—critical for applications like oil refineries or chemical plants. This durability ensures consistent performance in harsh environments, reducing the risk of failed emergency shutdowns and lowering maintenance costs over time. For engineers, the unit’s plug-and-play compatibility with ABB’s Tmax XT and Emax 2 circuit breakers eliminates the need for custom modifications, cutting installation time by up to 30% compared to third-party shunt trip units. The selectable voltage (24V DC/110V AC) also adds flexibility, allowing integration into diverse control systems without requiring separate part numbers—simplifying inventory management and procurement.

Additionally, the ABB 1SAP250100R0001’s fast tripping time (≤50ms) ensures that power is disconnected before faults escalate—for example, stopping a short circuit in a motor drive before it damages windings or triggers a fire. Unlike generic shunt trip units that may not align with circuit breaker mechanics, its precision-engineered design guarantees compatibility with ABB’s breaker trip mechanisms, avoiding misalignment issues that can cause delayed or failed tripping. This reliability is critical for meeting safety standards like NFPA 70E, which requires rapid remote shutdown in areas with electrical hazards—helping facilities avoid compliance penalties and improve workplace safety.

Application fields:

The ABB 1SAP250100R0001 excels in industries where remote emergency shutdown is mission-critical. In data centers, it’s used with ABB Tmax XT circuit breakers to connect to fire suppression systems: if a fire is detected, the unit triggers an immediate power cutoff to server racks, preventing electrical arcing from fueling the fire and protecting sensitive equipment. In healthcare facilities, it’s paired with Emax 2 circuit breakers in operating rooms—allowing nurses to remotely shut down power to medical devices via emergency stop panels if a fault occurs, reducing risk to patients. In manufacturing, it supports conveyor system safety: if a worker triggers an emergency stop, the ABB 1SAP250100R0001 shuts down the power feed to the conveyor’s motor drive, stopping the system instantly to prevent injury. Across all these use cases, the unit’s wide operating temperature range and vibration resistance ensure reliability in diverse environments—from cold data center server rooms to hot factory floors.

Related products:

ABB 1SAP250101R0001 – Higher-coil-voltage variant (230V AC) for industrial systems using line-voltage control signals.

ABB 1SAP250102R0001 – Low-power version (0.8A at 24V DC) for battery-backed emergency systems (e.g., backup generators).

ABB 1SAP250103R0001 – Auxiliary switch add-on for the 1SAP250100R0001, providing status feedback (e.g., “trip activated” signal to PLC).

ABB 1SAP250104R0001 – Sealed variant (IP54) for dusty environments (e.g., cement plants or mining operations).

ABB 1SAP250105R0001 – Compatibility adapter for older ABB SACE circuit breakers (enabling retrofits with 1SAP250100R0001).

ABB 1SAP250106R0001 – High-temperature version (-30°C to 70°C) for outdoor or extreme-heat applications (e.g., solar farms).

ABB 1SAP250107R0001 – Quick-connect terminal variant for tool-free wiring changes (reducing maintenance downtime).

ABB 1SAP250108R0001 – Redundant coil version for safety-critical systems (e.g., nuclear power plant auxiliary circuits).

Installation and maintenance:

Before installing the ABB 1SAP250100R0001, confirm the host circuit breaker is compatible (ABB Tmax XT 160–630A, Emax 2 250–1000A models)—incompatible breakers will cause mechanical misalignment and failed tripping. Ensure the circuit breaker is de-energized and locked out/tagged out (LOTO) to prevent electrical shock during installation. Remove the breaker’s front cover per ABB’s service manual, and clean the internal mounting slot to remove dust or debris that could block the unit’s fit. When securing the unit, use the provided mounting screws (M3 x 8mm) and torque to 0.5 Nm—over-tightening can damage the breaker’s internal components.

For wiring, use twisted-pair cable (1.5mm² max) to reduce electromagnetic interference (EMI) that could trigger false trips, and connect to a dedicated control circuit (not shared with other high-current devices). For ongoing maintenance, test the unit quarterly by sending a remote trip signal and verifying the breaker opens—this ensures the coil and mechanical linkage remain functional. Inspect the terminal connections annually for corrosion (especially in humid environments) and retighten if needed; replace the unit if tripping time exceeds 70ms (per ABB’s performance specs).

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