Carlo Gavazzi Phase, Voltage Monitoring Relay, 3, 3+N Phase, SPDT, 177 → 550V ac, DIN Rail
- RS Stock No.:
 - 201-0820
 - Mfr. Part No.:
 - DPB51CM44
 - Brand:
 - Carlo Gavazzi
 
Subtotal (1 unit)*
£89.12
(exc. VAT)
£106.94
(inc. VAT)
FREE delivery for orders over £50.00
In Stock
- 17 unit(s) ready to ship
 - Plus 5 unit(s) ready to ship from another location
 - Plus 11 unit(s) shipping from 08 January 2026
 
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units  | Per unit  | 
|---|---|
| 1 + | £89.12 | 
*price indicative
- RS Stock No.:
 - 201-0820
 - Mfr. Part No.:
 - DPB51CM44
 - Brand:
 - Carlo Gavazzi
 
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all  | Attribute | Value | 
|---|---|---|
| Brand | Carlo Gavazzi | |
| Monitoring Application | Phase, Voltage | |
| Electrical Phase | 3, 3+N | |
| Voltage Sensing Range | 177 → 550V ac | |
| Contact Configuration | SPDT | |
| Voltage Sensitivity | Overvoltage, Undervoltage | |
| Mounting Type | DIN Rail | |
| Phase Sensitivity | Phase Loss, Phase Sequence | |
| Series | DPB51 | |
| Height | 90mm | |
| Width | 17.5mm | |
| Maximum Operating Temperature | +60°C | |
| Minimum Operating Temperature | -20°C | |
| Operating Temperature Range | +60°C | |
| Maximum Voltage Sensed | 550V ac | |
| Terminal Type | Screw | |
| Length | 67.2mm | |
| Minimum Voltage Sensed | 177V ac | |
| Dimensions | 67.2 x 17.5 x 90mm | |
| Select all | ||
|---|---|---|
Brand Carlo Gavazzi  | ||
Monitoring Application Phase, Voltage  | ||
Electrical Phase 3, 3+N  | ||
Voltage Sensing Range 177 → 550V ac  | ||
Contact Configuration SPDT  | ||
Voltage Sensitivity Overvoltage, Undervoltage  | ||
Mounting Type DIN Rail  | ||
Phase Sensitivity Phase Loss, Phase Sequence  | ||
Series DPB51  | ||
Height 90mm  | ||
Width 17.5mm  | ||
Maximum Operating Temperature +60°C  | ||
Minimum Operating Temperature -20°C  | ||
Operating Temperature Range +60°C  | ||
Maximum Voltage Sensed 550V ac  | ||
Terminal Type Screw  | ||
Length 67.2mm  | ||
Minimum Voltage Sensed 177V ac  | ||
Dimensions 67.2 x 17.5 x 90mm  | ||
- COO (Country of Origin):
 - CN
 
The Carlo Gavazzi DPB51 is a 3-phase or 3-phase+neutral line voltage monitoring relay for phase sequence, phase loss, over and under voltage with built-in time delay function.
Detects when all 3 phases are present and have the correct phase sequence
Detects if all the 3-phase-phase or phase-neutral voltages are within the set limits
Upper and lower limits separately adjustable
Detects if all the 3-phase-phase or phase-neutral voltages are within the set limits
Upper and lower limits separately adjustable
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