E4S4000A R4000 PR121/P-LSI WMP 3P 3P_ABB_PRODUCT_吉林易择科技技术发展有限公司

Technical Parameters Parameter Specification Manufacturer ABB Series / Family SACE Emax E4 Product Type Air Circuit Breaker (Withdrawable – WMP) Model E4S4000A PR121/P-LSI Rated Continuous Current (Iu / In) 4000 A Number of Poles 3‑pole (three‑phase) Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) 1000 V AC Rated Impulse Withstand Voltage (Uimp) 12 kV Trip Unit Type PR121/P-LSI (Long-time, Short-time, Instantaneous, Ground fault protection) Protection Functions L (overload), S (short-time), I (instantaneous), G (ground fault) Short-Circuit Breaking Capacity (Icu) 75 kA Service Short-Circuit Capacity (Ics) 75 kA Short-Time Withstand Current (Icw) 75 kA for 1 s / 3 s Terminal Connection Type Withdrawable (WMP) Rated Frequency 50 / 60 Hz Standards Compliance IEC low-voltage circuit breaker standards Typical Applications Main distribution breaker, feeder protection in industrial and commercial switchgear

Grace +86 13600179521

DESCRIBE

The ABB E4S4000 PR121/P‑LSIG 4000 A 3‑pole WHR Air Circuit Breaker is a high‑capacity low‑voltage protection device from ABB’s SACE Emax E4 series designed for industrial and commercial three‑phase electrical distribution systems. It includes an electronic PR121/P‑LSIG trip unit, which provides adjustable protection for overloads, short‑time faults, instantaneous short circuits, and ground faults. The breaker has a withdrawable design (WHR) so it can be safely inserted and removed from switchgear without disconnecting the main busbars, facilitating maintenance and servicing. It is suitable for use as a main distribution breaker or feeder protection breaker in switchboards, switchgear, and power distribution panels.

SERVICE HOTLINE Grace +86 13600179521

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