3 Phase PME Fault Detection Unit 100A (WARB5100C/PME)
18th Ed. Compliant
2-Year Warranty
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The WARB5100C/PME is a 3 phase PME fault detection unit supplied as a 100A MCB + PME relay configuration. According to the manufacturer, this unit automatically monitors the supply voltage on both 400V and 415V supplies without the need for manual dip switch settings. Within 5 seconds, if any phase...
The WARB5100C/PME is a 3 phase PME fault detection unit supplied as a 100A MCB + PME relay configuration.
According to the manufacturer, this unit automatically monitors the supply voltage on both 400V and 415V supplies without the need for manual dip switch settings. Within 5 seconds, if any phase drops below 207V or rises above 253V, live, neutral and earth will be isolated.
Following an under-voltage event, isolation will automatically reset when the normal operating range is restored. Following an over-voltage event, isolation will require a manual reset on safety grounds using the red button of the WP9.
Installer Tip: This base model is the 100A MCB + PME relay version only. If the project also requires surge or RCBO protection, choose one of the related PME variants below.
Key Features
- 3 phase PME fault detection – monitors 400V and 415V supplies automatically
- 100A MCB + PME relay – base configuration for the range
- Under-voltage isolation – trips if any phase falls below 207V
- Over-voltage isolation – trips if any phase rises above 253V
- Fast response – isolates within 5 seconds
- Reset logic – auto reset after under-voltage recovery, manual reset after over-voltage
Variant Comparison
| Model | Configuration | Best Use Case |
|---|---|---|
| WARB5100C/PME (This Product) | 100A MCB + PME Relay | Base option where PME fault detection is required |
| WARB5100C/PMESP | 100A MCB + PME Relay + SPD | Adds surge protection |
| WARB5100C/PME40R | 100A MCB + PME Relay + 40A RCBO | Adds RCBO protection |
| WARB5100C/PME40RSP | 100A MCB + PME Relay + 40A RCBO / SPD | Adds both RCBO and surge protection |
What does the WARB5100C/PME include?
This base model is listed as 100A MCB + PME relay.
What voltages does it monitor?
The manufacturer states that it automatically monitors both 400V and 415V supplies.
When does it trip?
It isolates within 5 seconds if any phase drops below 207V or rises above 253V.
What happens after an under-voltage fault?
Following an under-voltage event, isolation will automatically reset when the normal operating range is restored.
What happens after an over-voltage fault?
Following an over-voltage event, isolation requires a manual reset using the red button of the WP9.
Are there other PME unit variants in the range?
Yes. The manufacturer lists related versions including WARB5100C/PMESP, WARB5100C/PME40R, and WARB5100C/PME40RSP.
| Product Code | WARB5100C/PME |
| Configuration | 100A MCB + PME relay |
| Supply Monitoring | 400V and 415V supplies |
| Under-Voltage Threshold | Less than 207V on any phase |
| Over-Voltage Threshold | More than 253V on any phase |
| Response Time | Within 5 seconds |
| Isolation Function | Live, neutral and earth isolated on fault |
| Under-Voltage Reset | Automatic reset when normal operating range is restored |
| Over-Voltage Reset | Manual reset using the red button of the WP9 |
| Surge Protection | Not included on this base model |
This PME fault detection unit should be installed by a qualified electrician in accordance with current wiring regulations, the installation design, and manufacturer guidance.
- Confirm the selected PME fault detection variant is suitable for the intended application
- Verify correct supply characteristics before commissioning
- Test the operation of the PME relay and isolation function as part of commissioning
- After an over-voltage trip, reset using the red button of the WP9 as described by the manufacturer
