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1SDA038661R1

The ABB 1SDA038661R1 is a low‑voltage air circuit breaker (ACB) from ABB’s S5N series, designed for industrial and commercial electrical distribution systems. This breaker is configured as a three‑pole (3P) device rated for a 630 A continuous current with a PR211/L‑LI electronic protection trip unit. It offers adjustable protection against overloads and short‑circuit faults.

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Technical Parameters Parameter Specification Product Name ABB 1SDA038661R1 Air Circuit Breaker Series / Family S5N Series (ABB ACB) Protection Unit PR211/L‑LI electronic trip unit Rated Current (Iₙ) 630 A Number of Poles 3 (three‑pole) Mounting Type Withdrawable moving part (W MP) Rated Operational Voltage (Uₑ) Up to 690 V AC Rated Uninterrupted Current (Iᵤ) 630 A Rated Insulation Voltage (Uᵢ) ~1000 V AC Rated Impulse Withstand Voltage (Uimp) ~12 kV Protection Functions Adjustable overload and short‑circuit (long‑time, instantaneous) Trip Unit Features PR211/L‑LI for protection coordination Short‑Circuit Breaking Capacity High fault breaking capability typical for industrial MCCBs Auxiliary Contacts Included for status and signaling Control & Indicators Breaker position (open/closed) indication Standards Compliance IEC low‑voltage circuit breaker standards Typical Use Protection and switching in industrial/commercial electrical distribution