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 (U<sub>imp</sub>) ~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
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.