ABB SU202M-K13 Safety Relay Module

ABB SU202M-K13 is a two-pole miniature circuit breaker (MCB) from ABB Stotz S&J, designed for protective switching in low‑voltage distribution panels and DIN‑rail installations. It is rated for 440 V AC with a nominal current of 13 A and a Type K tripping curve for moderate inrush protection. The device is UL489 listed and offers a robust short‑circuit withstand with Icn of 11.2 kA at 400 V (Icu up to 15 kA IEC 60947‑2) and a surge capability Uimp of 4 kV. It occupies two poles (2P) and two module widths, with a mounting depth of 69 mm, and is not intended for flush mounting. Terminal connections accommodate 0.75–25 mm² multi‑strand conductors or 0.75–35 mm² single‑core conductors, and it operates at 50–60 Hz within an ambient range of -25 to 55 C. The enclosure is IP20, and the device falls into energy‑limiting class 3 with an approximate loss of 4.6 W. This MCB is suitable for protecting feeders in standard distribution circuits and is commonly used in panel boards where 13 A protection and a K‑curve response are appropriate, offering reliable, easy replacement in 440 V class networks.