The Siemens SENTRON 5SU1653-1KK32 is a combined residual current device and miniature circuit breaker (RCBO) in a 2-module-wide (36 mm) housing, rated 32 A with 30 mA residual sensitivity, Type AC, C characteristic.
The 4.5 kA breaking capacity per EN 60898 covers standard domestic and commercial final circuits; the 15 kA rating per IEC 60947-2 gives headroom for industrial panel applications where higher prospective fault currents are expected. The C characteristic (5–10× In magnetic trip) suits motor and lighting loads with moderate inrush — not for pure resistive or long-cable runs where a B curve would be preferred. The 30 mA residual sensitivity (Type AC) detects sinusoidal AC earth faults only — suitable for general socket outlets and lighting circuits where no pulsed DC or smooth DC fault currents are present. For variable-speed drives or EV charging, a Type A or F device would be required.
Snap-on mounting to DIN rail, any position. Depth 77 mm, installation depth 70 mm, width 36 mm (2 MW).