The Siemens 5SU1654-7RC20 is a 2-module RCBO combining overcurrent protection (C-curve, 20 A) with Type A residual-current detection (300 mA) in a single 2-pole package. The C characteristic means the magnetic trip operates at 5 to 10 times rated current — sized for motor and lighting circuits where inrush is moderate. Type A sensitivity catches pulsating DC fault currents from single-phase rectifiers, which a plain AC type would miss. The 300 mA trip threshold is typical for socket-outlet circuits in commercial or light-industrial panels where earth-leakage alarms, not immediate disconnection, are the goal.
Siemens 5SU1654-7RC20 RCBO 20 A 2-pole C-curve Type A 300mA
MPN5SU1654-7RC20
Siemens 5SU1654-7RC20 RCBO, 20 A, 2-pole, 2-module, C characteristic, Type A 300 mA residual current.
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MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jul 2026
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Frequently asked questions
Where can I buy the 5SU1654-7RC20 and get a price?
The 5SU1654-7RC20 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
What does the C characteristic and Type A 300 mA mean on this RCBO?
The C characteristic means the magnetic trip operates at 5 to 10 times the 20 A rating, handling moderate inrush from motor and lighting circuits. Type A residual-current detection catches pulsating DC fault currents from single-phase rectifiers, and the 300 mA threshold suits socket-outlet circuits where earth-leakage alarms are preferred over immediate disconnection.
MPN
5SU1654-7RC20