The C60HC45R100 is a C60H-series RCBO (residual current circuit breaker with overcurrent protection) from Schneider Electric, combining a 45 A thermal-magnetic MCB with 100 mA earth-leakage protection in a single 1P+N module. It snaps onto 35 mm symmetrical DIN rail and is rated for distribution outgoer circuits at 50...250 V AC, 50/60 Hz.
The 10 kA Icu breaking capacity at 50...250 V AC conforms to IEC 1009 — sufficient for most sub-distribution boards where the upstream fault level is limited. Earth-leakage sensitivity is 100 mA, Class AC (instantaneous), meaning it detects sinusoidal residual currents only; not suitable for pulsating DC or variable-frequency drive circuits that generate smooth DC fault currents. Thermal-magnetic trip technology gives both overload (thermal bimetal) and short-circuit (solenoid) protection in one unit. The 20,000-cycle electrical durability is typical for a distribution RCBO — adequate for branch circuits with infrequent switching, not for motor-starting duty where higher endurance is needed.
Schneider lists the C60HC45R100 as obsolete. If a form-fit-function replacement is needed, a parametric search for a 1P+N RCBO at 45 A, C-curve, 100 mA sensitivity, 10 kA breaking capacity, and DIN-rail mount will identify candidates; verify terminal capacity and neutral position (right) before substituting.
The 1P+N module occupies two 9 mm pitches, so it fits a standard 18 mm width. Positive-break indication on the toggle gives visual confirmation of contact separation.