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.
Technical Specifications
- 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
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.
