Enphase Single-Phase Q Relay
The Enphase Q Relay (reference Q-RELAY-1P-INT) is a high-performance grid disconnection protection device. This product is a safety device that physically isolates your photovoltaic installation in the event of a fault on the public grid, ensuring the safety of workers and compliance with VDE standards.
This accessory is specifically compatible with Enphase microinverters from the IQ7 series (IQ7, IQ7+, IQ7X, IQ7A) and the IQ8 range. This device secures energy production by integrating with the Envoy-S ecosystem. It communicates via the PLC protocol to control bipolar disconnection (phase and neutral) as soon as a voltage or frequency anomaly is detected.
Its installation on a standard DIN rail (53 mm wide) facilitates its integration into AC cabinets. Thanks to its intelligent management, it allows automatic reset as soon as the network parameters become stable again, thus optimising the production time of your solar panels.
- System capacity: Supports up to 19 IQ7 microinverters or 16 IQ7+ units per relay.
- Visual diagnostics: Two-LED interface for real-time monitoring of network status and frequency.
- Technical reliability: Category III surge protection and IP20 insulation.
- Powerconsumption: High energy efficiency with only 10 VA no-load consumption.
EAN: 0712971139992
Enphase Relay Q (single-phase)

In Enphase installations, the single-phase Q relay (decoupling protection) acts as a physical grid disconnection device for single-phase installations.
In the event ofspecific grid faults, the Q relay disconnects Enphase microinverters from the AC grid. When voltages and/or frequencies return to acceptable ranges, the Q relay reconnects the system.
The Q relay works in conjunction with the Envoy-S, and ensures that both neutral and phase conductors are disconnected according to grid requirements.
Easy to install
- Lightweight and simple
- DIN rail mounting for rapid installation
Reliable
- Reliable load control
- Automatic reset on return to normal network conditions
Intelligent
- Management of voltage and frequency dips
- Can be updated remotely
- Easy-to-understand LED display
Technical specifications
|
SPÉCIFICATIONS Q-RELAY-1P-INT |
Coupling Protection - Single-phase network (50 Hz) |
| Overvoltage category | III |
| Pollution degree | 2 |
| AC voltage operating range | from 85 to 270 Vrms |
| Nominal input voltage (Vnom) | 230 / 240 Vrms |
| Nominal frequency | 50 Hz |
| Frequency and voltage acquisition time under normal operation | 100 ms |
| Number of protected voltage inputs | 1 |
| Number of IQ 7 microinverters per phase | Up to 19 Enphase IQ 7 Microinverters or 16 Enphase IQ 7+ |
| Number of Q Relays per system | Up to four active Q relays per system |
|
Type of electrical output |
Double-pole normally open contactor (L1 and N) |
| Output power | 4.8kVA |
| Type of electrical output | 230 to 240 Vrms, 20A |
| Standby power consumption | 10 VA |
| LEDs | Two LEDs red/green: one for max/min U tripping and another for max/min frequency tripping |
| Mounting | 35 mm DIN rail (standard) |
| Width | 53 mm |
| Overvoltage - L1 N output | Combination (1kV 2Ω) |
| Operating temperature range | -40 °C to 50 °C |
| IP protection rating | IP 20 (To be used in a protected environment) |
| Humidity | 0% to 95% non-condensing |
| Compliance | IEC 61010 |
|
EMC Compliance |
IEC 61326-1, BS EN 61000-3-2, BS EN 61000-3-3, BS EN 50065-1, BS EN 50065-2-2 |
| Warranty | 5 years |
Enphase Single-Phase Q Relay — Mounting and accessories
Enphase Single-Phase Q Relay by Enphase is available in our Mounting and accessories catalog. Product weight: 0.5 kg. Reference: RELAIS-Q-mono.