Siemens 5ST3020 Fault Signal Contact, 1 NO + 1 NC for MCB (5SL, 5SY, 5SP) & RCBO (5SU1) Original Brand New
$81.09
High-reliability fault signal contact featuring 1 NO (Normally Open) + 1 NC (Normally Closed) contacts. Designed for seamless integration with Siemens 5SL, 5SY, and 5SP miniature circuit breakers, as well as 5SV RCCBs and 5SU1 RCBOs. (Note: Use with 5SU1 requires the 5ST3805-1 handle coupler).
Availability: In stock
Overview
The Siemens 5ST3020 Fault Signal Contact is a vital accessory for modern electrical distribution boards. It provides immediate remote signaling in the event of a fault trip (overload or short circuit), allowing for faster troubleshooting and reduced downtime in industrial, commercial, and residential applications.
Key Benefit
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Instant Notification: Provides a clear signal when a circuit breaker trips due to a fault, distinguishing it from manual switching.
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Versatile Compatibility: A single module fits a wide range of Siemens protective devices (MCBs, RCBOs, and RCCBs).
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Compact Design: Easy to mount onto the side of existing DIN rail components without requiring extensive rewiring.
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Enhanced Safety: Improves system monitoring capabilities by integrating with PLC systems or alarm indicators.
Technical Function
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Contact Configuration: 1 NO + 1 NC (1 Normally Open + 1 Normally Closed).
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Fault Differentiation: Specifically signals “tripped” status, ensuring maintenance teams can identify the cause of power loss quickly.
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Mounting: Side-mounted attachment to the primary circuit protection device.
Compatibility Specification
This auxiliary component is designed for use with the following Siemens series:
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Miniature Circuit Breakers (MCB): 5SL, 5SY, 5SP.
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Residual Current Operated Circuit Breakers (RCCB): 5SV.
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RCBOs: 5SU1 series (Note: Requires the 5ST3805-1 handle coupler for successful installation).
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| Weight | 0.065 kg |
|---|---|
| Dimensions | 82.00 × 92.00 × 18.00 mm |
| Brand | SIEMENS |
| product brand name | SENTRON |
| product designation | Fault signal contact |
| design of the product | Mountable |
| electrical endurance (switching cycles) / typical | 10 000 |
| insulation voltage / rated value | 440 V |
| surge voltage resistance / rated value | 4 kV |
| operating frequency | 50/60 Hz |
| protection class IP | IP20 |
| product component | – |
| ● fault signal contact | Yes |
| number of fault signal contacts | 1 |
| number of NC contacts | 1 |
| number of NO contacts | 1 |
| number of CO contacts | 0 |
| product extension | Fault signal contact |
| connectable conductor cross-section | – |
| tightening torque / with screw-type terminals | – |
| type of connectable conductor cross-sections / at AWG cables | 24 … 12 |
| ambient temperature / during operation | – |
| ● minimum | -25 °C |
| ● maximum | 55 °C |
| ambient temperature / during storage | – |
| ● minimum permissible | -40 °C |
| ● maximum permissible | 75 °C |
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