Dold Monitoring Relay, 3 Phase, SPDT, DIN Rail, 230 V, 400V ac
- RS Stock No.:
- 181-2795
- Mfr. Part No.:
- RK9871.71 3/N AC400/230V 50/60Hz
- Brand:
- Dold
Subtotal (1 unit)*
£105.11
(exc. VAT)
£126.13
(inc. VAT)
FREE delivery for orders over £60.00
Stocked by manufacturer
- Ready to ship from 19 May 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | £105.11 |
*price indicative
- RS Stock No.:
- 181-2795
- Mfr. Part No.:
- RK9871.71 3/N AC400/230V 50/60Hz
- Brand:
- Dold
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Dold | |
| Product Type | Monitoring Relay | |
| Electrical Phase | 3 | |
| Contact Configuration | SPDT | |
| Mount Type | DIN Rail | |
| Switching Voltage | 230V ac | |
| Power Consumption | 6VA | |
| Terminal Type | Screw | |
| IP Rating | IP20, IP40 | |
| Supply AC Voltage | 230, 400V | |
| Contact Current | 4A | |
| Minimum Operating Temperature | -25°C | |
| Maximum Operating Temperature | 55°C | |
| Series | RK 9871 | |
| Height | 90mm | |
| Width | 17.5mm | |
| Standards/Approvals | CE, RoHS | |
| Length | 66mm | |
| Select all | ||
|---|---|---|
Brand Dold | ||
Product Type Monitoring Relay | ||
Electrical Phase 3 | ||
Contact Configuration SPDT | ||
Mount Type DIN Rail | ||
Switching Voltage 230V ac | ||
Power Consumption 6VA | ||
Terminal Type Screw | ||
IP Rating IP20, IP40 | ||
Supply AC Voltage 230, 400V | ||
Contact Current 4A | ||
Minimum Operating Temperature -25°C | ||
Maximum Operating Temperature 55°C | ||
Series RK 9871 | ||
Height 90mm | ||
Width 17.5mm | ||
Standards/Approvals CE, RoHS | ||
Length 66mm | ||
- COO (Country of Origin):
- DE
Detection of undervoltage in 3-phase systems
Without separately auxiliary voltage (internal supply from all 3 phases)
LED indication for operation voltage and contact position
De-energised on trip
RK 9871.71: 1 changeover contact RK 9871.72: 2 changeover contacts
With fixed time delay of 0.5s for fault indication
With fixed time delay of 1min for reset
With fixed response value at AC 195.5V
As option with test-button for function control
Width 17,5 mm
Advantages / Customer benefit
Higher safety in buildings
Application
Monitoring of undervoltage in 3 phase voltage systems and switch over to emergency supply
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