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70.61.8.400.P000 Finder Monitoring relay 3 phase AC 208/480V
Finder 70.61.8.400.P000 is a DIN-rail-mounted three-phase monitoring relay for phase-loss and phase-sequence detection across 208–480 V AC systems, featuring a 6 A SPDT changeover output, push-in terminals and IP20 protection.
£53.74
Why Choose the Finder 70.61.8.400.P000 Three-Phase Monitoring Relay?
The Finder 70.61.8.400.P000 is an electronic three-phase monitoring relay designed to detect phase loss and incorrect phase sequence in industrial three-phase electrical systems. Part of the Finder 70 Series, this device provides a practical solution for monitoring the integrity of three-phase supplies used in motor control, machinery and industrial automation applications.
Designed for three-phase systems operating between 208 V and 480 V AC, the relay monitors phase availability and phase rotation. Its phase-loss detection function also operates under phase regeneration conditions, helping identify supply faults that could otherwise affect connected motors and equipment.
The Finder 70.61.8.400.P000 features a single changeover (SPDT) output contact rated at 6 A, a fixed switching delay and a compact DIN-rail mounting design. With push-in terminals and an IP20 protection rating, it is suitable for integration into industrial electrical control panels and three-phase monitoring assemblies.
Key Advantages
- Three-phase supply monitoring for industrial electrical installations.
- Phase-loss detection to identify missing supply phases.
- Phase-sequence monitoring to detect incorrect phase rotation.
- 208–480 V AC monitoring range for compatible three-phase systems.
- Phase-loss detection under phase regeneration conditions for enhanced monitoring capability.
- One SPDT changeover output for fault signalling and control.
- 6 A output contact rating for appropriately rated control circuits.
- Fixed switching delay for defined relay operation.
- Push-in terminals for convenient electrical wiring.
- DIN-rail mounting for straightforward control-panel installation.
- IP20 protection rating for installation inside suitable electrical enclosures.
Key Features
- Finder 70 Series electronic monitoring relay.
- Model: 70.61.8.400.P000.
- Three-phase voltage monitoring.
- Phase-loss monitoring function.
- Phase-sequence monitoring function.
- Monitoring voltage range: 3 × 208–480 V AC.
- Nominal three-phase supply: 400 V AC.
- Output contact arrangement: 1 changeover (SPDT).
- Rated output contact current: 6 A.
- Output contact rating: 6 A at 250 V AC.
- Fixed switching delay: approximately 0.5 s.
- Power consumption: 1 W.
- Push-in terminal connections.
- DIN-rail mounting.
- IP20 protection classification.
- Electronic monitoring powered from the monitored three-phase supply.
- Suitable for industrial phase monitoring and fault signalling applications.
Reliable Phase-Loss and Phase-Sequence Monitoring for Industrial Systems
The Finder 70.61.8.400.P000 continuously monitors the connected three-phase electrical supply for phase loss and incorrect phase rotation. When the monitored supply meets the relay's operating conditions, its changeover output provides a switching signal that can be incorporated into an industrial control circuit. If a monitored phase fault occurs, the relay changes its output state according to its operating characteristic.
The SPDT output contact can be used to control an appropriately rated contactor coil, activate a fault indication or provide a signal to an industrial automation system. This allows the monitoring relay to form part of a wider motor protection and electrical supervision arrangement. The device is a monitoring component rather than a power circuit breaker and must be used with suitable switching and protective equipment.
Typical Applications
- Three-phase electrical supply monitoring.
- Industrial motor control panels.
- Phase-loss detection for three-phase motor installations.
- Phase-sequence verification in industrial machinery.
- Pump and water treatment control systems.
- Industrial ventilation and compressor installations.
- Conveyor and material handling equipment.
- Electrical distribution and automation panels.
- PLC fault signalling and monitoring circuits.
- OEM machinery requiring three-phase supply supervision.
Technical Specifications
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| Terminal Type | Push-in | |
|---|---|---|
| Monitored Supply | Three-phase | |
| Time Delay | Fixed | |
| Mounting Type | DIN rail | |
| Monitoring Function | Three-phase supply | |
| Manufacturer | Finder | |
| Series | 70 Series | |
| Model | 70.61.8.400.P000 | |
| Product type | Three-phase monitoring relay | |
| Monitoring functions | Phase loss and phase sequence | |
| Electrical system | Three-phase AC | |
| Nominal supply voltage | 400 V AC | |
| Phase monitoring range | 208–480 V AC | |
| Supply voltage range | 380–415 V AC | |
| Output contact configuration | 1 SPDT (changeover) | |
| Rated output contact current | 6 A | |
| Output contact electrical rating | 6 A at 250 V AC | |
| Switching delay | 0.5 s | |
| Power consumption | 1 W | |
| Fault memory | No | |
| Contact material | AgSnO2 | |
| Connection type | Push-in terminals | |
| Mounting | DIN rail | |
| Protection rating | IP20 | |
| EAN / GTIN-13 | 8012823444215 | |
| Product category | Phase Monitoring Relays |
Frequently Asked Questions
What is the Finder 70.61.8.400.P000 used for?
The Finder 70.61.8.400.P000 is a three-phase monitoring relay used to detect phase loss and incorrect phase sequence in industrial electrical systems. It provides a changeover output for fault signalling and control applications.
What voltage range does the Finder 70.61.8.400.P000 monitor?
The relay is specified for monitoring three-phase systems within a 208–480 V AC phase-to-phase voltage range, with a nominal supply configuration of 400 V AC.
Does this relay detect phase loss?
Yes. The Finder 70.61.8.400.P000 detects phase loss in three-phase supplies, including phase-loss conditions where phase regeneration may be present.
Can the Finder 70.61.8.400.P000 detect incorrect phase rotation?
Yes. The relay includes phase-sequence monitoring, allowing it to identify an incorrect phase rotation sequence in a three-phase supply.
What output contact does the Finder 70.61.8.400.P000 have?
The relay provides one SPDT changeover output contact rated at 6 A at 250 V AC for appropriately rated control and signalling circuits.
Does this monitoring relay require a separate power supply?
The Finder 70.61.8.400.P000 is powered from the monitored three-phase electrical supply, so its installation does not normally require a separate auxiliary power supply.
What is the switching delay of the Finder 70.61.8.400.P000?
The relay has a fixed switching delay of approximately 0.5 s, providing a defined response characteristic for its monitoring function.
Can this relay be used with a motor contactor?
Yes. Its changeover output can be incorporated into a suitably designed motor contactor control circuit, allowing the control system to respond to detected phase faults. The contactor coil and control circuit must remain within the relay's output ratings.
Can the Finder 70.61.8.400.P000 be installed on a DIN rail?
Yes. The relay is designed for DIN-rail mounting within an appropriate industrial electrical enclosure and uses push-in terminal connections.
Does the Finder 70.61.8.400.P000 provide short-circuit or motor overload protection?
No. This device monitors phase loss and phase sequence but does not replace a circuit breaker, fuse or motor overload relay. Suitable electrical protective devices must be provided separately.
Trusted by Industrial Automation and Electrical Engineering Professionals
Finder 70 Series monitoring relays are designed for electrical engineers, panel builders, machinery manufacturers and industrial automation specialists requiring dependable phase monitoring, practical fault signalling and straightforward integration into industrial three-phase control systems.
