Allen Bradley 813S-V3-480V Machine Alert Voltage Relay – Three-Phase Monitoring, 440–480V AC, Type V3 Motor Protection Relay

The Allen Bradley 813S-V3-480V is a Next Generation Dedicated Function Motor Protection Relay designed for three-phase voltage monitoring in industrial motor control systems. Operating across a 440–480V AC range, this Type V3 relay ensures comprehensive voltage supervision, protecting motors and connected equipment from under-voltage, over-voltage, and phase imbalance conditions.

Engineered with advanced machine alert functionality, the 813S-V3-480V provides two change-over (SPDT) contacts for reliable switching and status signalling. It features built-in three-phase hysteresis capability for enhanced accuracy and stability, ensuring dependable protection under fluctuating line conditions. With a compact 45mm housing and screw terminal connections, this relay integrates seamlessly into modern motor control panels.

Technical Specifications

Model: 813S-V3-480V Allen Bradley
Series: 813S Machine Alert
Product Type: Three-Phase Voltage Monitoring Relay
Voltage Range: 440–480V AC
Function: Motor protection and voltage monitoring
Contact Configuration: 2 change-over (SPDT) contacts
Phase Monitoring: Three-phase under/over-voltage and hysteresis detection
Mounting Type: DIN Rail (35mm top hat)
Connection Type: Screw terminal connections
Dimensions (W x H x D): 45 x 80 x 99.5 mm

Electrical & Performance Details

• Supply Voltage Range: 440–480V AC (three-phase monitoring)
• Output Contacts: 2 SPDT change-over contacts
• Three-Phase Over-Voltage Detection: Yes
• Three-Phase Under-Voltage Detection: Yes
• Hysteresis Function: Yes (three-phase and single-phase supported)
• Single-Phase Over/Under Voltage: No
• Switching Method: Electromechanical relay contacts
• Response Time: Fast reaction to voltage faults for motor protection
• Control Type: Dedicated function voltage relay

Mechanical Specifications

• Width: 45 mm
• Height: 80 mm
• Depth: 99.5 mm
• Mounting: 35mm DIN Rail
• Connection Type: Screw terminals
• Housing Type: Compact modular design
• Detachable Clamps: No

Environmental & Application Suitability

• Typical Applications: Motor protection, pump systems, HVAC, conveyor drives, and process equipment
• Monitoring Capability: Detects three-phase over-voltage, under-voltage, and line imbalance
• Use Case: Designed for machine alert and preventative maintenance systems
• Installation Environment: Industrial control panels and automation cabinets

Compliance & Certifications

• Performance Level: Conforms to EN ISO 13849-1 safety standards
• UL / cUL Listed: Yes
• CE Marked: Yes
• EN 60947 Compliant: Yes
• RoHS Compliant: Yes

Key Features & Benefits

✅ Three-phase voltage monitoring across 440–480V AC networks.

✅ Dual SPDT relay contacts for alarm or control functions.

✅ Hysteresis capability ensures stable voltage protection under fluctuating loads.

✅ Compact 45mm housing conserves panel space.

✅ Reliable motor protection from over-voltage and under-voltage conditions.

✅ Easy installation via screw terminals and DIN rail mounting.

✅ High accuracy and repeatability in voltage fault detection.

📦 Order the Allen Bradley 813S-V3-480V from Drive Outlet Megastore

At Drive Outlet Megastore we offer unbeatable Allen Bradley 813S-V3-480V prices, with fast UK & EU delivery and professional support for motor protection and voltage monitoring applications.

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Protect your motors with the Allen Bradley 813S-V3-480V — precise three-phase voltage monitoring engineered for industrial reliability, available now from Drive Outlet Megastore.