Siemens Resistance Monitoring Relay, SPDT
- RS Stock No.:
 - 255-0869
 - Mfr. Part No.:
 - 3UG45811AW31
 - Brand:
 - Siemens
 
Subtotal (1 unit)*
£249.69
(exc. VAT)
£299.63
(inc. VAT)
FREE delivery for orders over £50.00
Temporarily out of stock
- Shipping from 24 November 2025
 
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Units  | Per unit  | 
|---|---|
| 1 + | £249.69 | 
*price indicative
- RS Stock No.:
 - 255-0869
 - Mfr. Part No.:
 - 3UG45811AW31
 - Brand:
 - Siemens
 
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all  | Attribute | Value | 
|---|---|---|
| Brand | Siemens | |
| Monitoring Application | Resistance | |
| Contact Configuration | SPDT | |
| Voltage Sensitivity | Overvoltage, Undervoltage | |
| Select all | ||
|---|---|---|
Brand Siemens  | ||
Monitoring Application Resistance  | ||
Contact Configuration SPDT  | ||
Voltage Sensitivity Overvoltage, Undervoltage  | ||
- COO (Country of Origin):
 - DE
 
The Siemens Insulation monitoring relays are used for monitoring the insulation resistance between ungrounded 1- or 3-phase AC supplies and a protective conductor. They measure insulation resistances between system cables and system ground. If the value falls below the threshold value, the output relays are switched to fault status. With these devices, which are suitable for both AC and DC networks, a pulsed test signal is fed into the network to be monitored and the isolation resistance is determined.
Wide control supply voltage range
Frequency range 15 to 400 Hz
Monitoring of broken conductors
Frequency range 15 to 400 Hz
Monitoring of broken conductors
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