SIEMENS
SIEMENS 3RT29261CD00 Surge Suppressor 127-240V AC 150-250V DC S0 Frame
Protects S0-frame contactors with an RC-coupled surge suppressor rated 127-240 V AC and 150-250 V DC
- Protects contactor coils from voltage spikes using RC coupling
- Handles 127-240V AC for broad control-circuit coverage
- Handles 150-250V DC for versatile DC applications
- Designed for S0 frame contactors ensuring direct fit
- Compatible with 3RT2 series for reliable integration
Product Identity
The SIEMENS 3RT29261CD00 is a surge suppressor accessory designed for 3RT2 series S0 frame contactors. It provides RC coupling protection across 127-240V AC and 150-250V DC control circuits. Electrical technicians and panel builders use it to limit transient voltages that can damage contactor coils and adjacent electronics.
Upgrade Context
This suppressor replaces installations that rely on contactors without dedicated overvoltage protection or that use mismatched clamping devices. The jump is worth it when switching inductive loads generates spikes that exceed the coil insulation rating or cause nuisance tripping in sensitive control networks. Panels operating without any suppressor, or with a device rated for a different voltage band, are the primary candidates.
Build Integration
The unit mounts directly onto compatible 3RT2 S0 frame contactors without additional wiring harnesses or external DIN rail space. Its RC network dissipates energy internally, freeing the control circuit from voltage overshoot during opening transitions. Installers must verify the coil voltage falls within the 127-240V AC or 150-250V DC range before fitting.
Highlights
- Protects contactor coils from voltage spikes using RC coupling
- Handles 127-240V AC for broad control-circuit coverage
- Handles 150-250V DC for versatile DC applications
- Designed for S0 frame contactors ensuring direct fit
- Compatible with 3RT2 series for reliable integration
Specifications
| Brand | SIEMENS |
|---|
Questions about this item
Will this 3RT29261CD00 surge suppressor fit on an S0 frame contactor?
Yes, it is designed for S0 frame contactors in the 3RT2 series.
How is the RC coupling suppressor installed on the contactor coil terminals?
It snaps onto the coil terminals of a compatible 3RT2 S0 contactor; ensure the voltage range matches 127-240V AC or 150-250V DC.
Does the RC coupling element inside need periodic replacement?
The RC coupling is a solid-state component with no moving parts and does not require scheduled replacement.
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