Weidmüller WAS4 PRO FREQ (8581180000) | Frequency Monitoring Relay
Electrical Parameters
Input Voltage Range: 24-240V AC/DC (auto-sensing)

Frequency Measurement Range: 15-500Hz (adjustable)

Measurement Accuracy: ±0.1Hz

Threshold Adjustment:

Under-frequency: Adjustable 15-500Hz

Over-frequency: Adjustable 15-500Hz

Hysteresis: 0.1-10Hz (programmable)

Output Specifications
Relay Outputs: 2× SPDT (5A/250V AC)

Switching Delay: Configurable 0-25s

Response Time: <100ms

General Specifications
Power Consumption: <2VA

Display: LED indicators for power/status/alarm

Protections: Reverse polarity, overvoltage (EN 61000-6-2)

Isolation Voltage: 4kV (input/output)

Operating Temperature: -25°C to +60°C

Storage Temperature: -40°C to +85°C

Housing Material: Self-extinguishing plastic (UL94 V-0)

Mounting: DIN rail (35mm)

Certifications & Standards
Safety: UL 508, CSA C22.2 No.14

EMC: EN 61000-6-2 (Immunity), EN 61000-6-4 (Emission)

RoHS & REACH compliant

Typical Applications
Generator/alternator protection systems

Motor and pump speed monitoring

Power grid frequency stabilization

Critical equipment frequency supervision