Detailed Description

Product Overview
The ABB 1SDA101656R1 is a high-capacity molded-case circuit breaker from the Tmax XT7S M series. Designed for heavy industrial power distribution systems, this fixed-mount 4-pole breaker delivers a rated current of 1250 A and incorporates the EKIP DIP LS/I solid-state electronic trip unit, offering precise and adjustable protection for demanding installations. 

Key Specifications

• Model / Part Number: 1SDA101656R1

• Series: Tmax XT7S M 

• Rated Current (Iₙ): 1250 A 

• Number of Poles: 4-pole (four-pole) 

• Trip Unit / Release: EKIP DIP LS/I electronic solid-state trip unit 

• Connection / Mounting: Fixed, front-terminal bolts 

• Rated Operational Voltage: Up to 690 V AC

• Rated Uninterrupted Current (Iᵤ): 1250 A 

• Short-Circuit Breaking Capacity (Icu) at 415-V: 50 kA

• Degree of Protection: IP20 

• Dimensions: approx. 280 mm (W) × 268 mm (H) × 178 mm (D)

• Weight: approx. 14–15 kg 

• Standards: IEC 60947 (Low-voltage circuit breakers) 

Features & Benefits

1. High current capability: With its 1250 A rating, this breaker is suited for large switchboards, industrial feeders, and critical power installations.

2. Advanced electronic protection: The EKIP DIP LS/I trip unit enables precise overload, short-time and instantaneous protection settings — allowing tailored protection rather than simple thermal-magnetic.

3. Comprehensive disconnection: Four-pole design ensures all phases plus neutral are protected/disconnected, which is valuable in three-phase systems with neutral monitoring or systems needing full break.

4. Fixed front-terminal mounting: Simplifies panel layout and maintenance, with front access connection, saving rear space and improving layout efficiency.

5. Industrial-grade breaking capacity: With a 50 kA interrupting capacity (at 415 V) it offers the robustness needed for high fault potential installations.

6. Compact physical footprint for capacity: Good size-to-capacity ratio for a 1250 A breaker ensures efficient space use in modern switchboards.

Applications / Use Cases

• Main or sub-distribution boards in industrial plants (manufacturing, petrochemical, mining).

• Protection of large motors, motor feeders, generator or transformer outputs.

• Systems where selective and adjustable protection is required (using electronic trip unit).

• Commercial or institutional buildings with high power demand — data centre feed, hospital power distribution.

• Switchgear upgrade projects where replacing older thermal-magnetic breakers with modern electronic trip units improves protection and monitoring.

Ordering & Package Information

• Supplied as a single unit (MOQ = 1) in original sealed packaging. 

• EAN / GTIN: 8056221017008

• Country of origin: Italy 

Compliance & Safety

• Meets applicable low-voltage switchgear standards (IEC 60947 series) and is designed for reliable interruption of faults in heavy industrial applications. 

• The electronic trip unit allows more refined protection curves, reducing nuisance trips and enhancing system uptime.