Monitoring Relays · DPR-175A
DPR-175A Three-Phase Voltage Monitoring Relay
A slim DIN-rail relay monitoring phase sequence, under-voltage, over-voltage and phase loss on a three-phase, three-wire 230 V AC nominal system.
3-phaseThree-wire input
230V ACNominal supply
170–290VSupply range
5A SPDTRelay output
Product Overview
DPR-175A monitors several phase and voltage conditions for three-phase machinery and pump circuits. Front controls set under-voltage, over-voltage and trip delay. Confirm system topology before selection.
Key Features
- Phase-sequence monitoring
- Under- and over-voltage monitoring
- Phase-loss detection
- Front-adjustable trip delay
- 17.5 mm DIN housing
Available Models / Configurations
Supplier-listed family information; confirm the exact orderable RITOKS configuration.
| Manufacturer model | Input | Supply range | Output |
|---|---|---|---|
| DPR-175A | 3-phase, 3-wire, 230 V AC nominal | 170–290 V AC | 5 A SPDT |
Technical Specifications
| Product type | Three-phase voltage monitoring relay |
|---|---|
| Nominal supply | 230 V AC, three-phase three-wire |
| Supply voltage range | 170–290 V AC |
| Monitored functions | Phase sequence; under-voltage; over-voltage; phase loss |
| Trip delay | 0.2–10 s |
| Relay output | 5 A SPDT |
| Housing width | 17.5 mm |
| Mounting | DIN rail |
Applications
Illustrative panel environments; confirm equipment fit and circuit requirements for the selected model.
Motor Protection Panels
Monitor three-phase supply conditions.
Pump Control Cabinets
Detect phase and voltage faults before equipment damage.
OEM Machinery
DIN-rail monitoring relay for suitable three-wire systems.
Information to Confirm for Selection
- Three-phase three-wire topology
- Nominal voltage and operating range
- Required fault functions
- Trip and reset thresholds; delay
- Output-contact load and wiring
FAQ
Does this relay monitor phase sequence?
Yes. The manufacturer lists phase sequence among the monitored conditions.
What system is specified?
A three-phase, three-wire 230 V AC nominal system with a published 170–290 V AC supply range.
What is the output?
The manufacturer lists a 5 A SPDT relay output.
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Request a Quote
Send the exact model, required ratings, quantity and destination. We will confirm availability and documentation before quotation.
Please include: Three-phase three-wire topology; Nominal voltage and operating range; Required fault functions.