SDV FH6. Voltage sensor/Monitoring Relay. Brand-Omron. Supply-100-110vac. Output-Relay. Made in-Japan. Condition-New, Pack.

SDV FH6 Voltage Sensor / Monitoring Relay

The SDV FH6 Voltage Sensor / Monitoring Relay actively supervises three-phase electrical systems and protects connected equipment from abnormal voltage conditions. Primarily, it monitors under-voltage and over-voltage levels; additionally, it detects phase failure and voltage imbalance when users enable those functions. Whenever the supply voltage crosses preset safety limits, the SDV FH6 immediately switches its relay output; therefore, the system quickly isolates the load from unsafe power.

Consequently, the relay protects motors, compressors, control panels, automation systems, and regulated power supplies. Furthermore, the fast reaction prevents overheating and insulation damage. As a result, operators reduce maintenance expenses and avoid unexpected downtime.

Users can set adjustable voltage thresholds directly on the device; thus, they define precise upper and lower limits according to system requirements. Moreover, users can adjust the time-delay setting; therefore, the relay ignores short voltage disturbances and reacts only to real faults. In other words, the device distinguishes temporary fluctuations from dangerous conditions. Accordingly, the electrical system operates more reliably.

The SDV FH6 uses high-quality electronic components to ensure stable long-term operation. In addition, its internal measuring circuit maintains accurate voltage detection under varying loads. Because of this, the relay continues to monitor power conditions consistently.

Technicians install the unit quickly on a DIN rail; simultaneously, they save valuable panel space. Meanwhile, screw terminals hold wiring firmly and simplify connections; therefore, technicians complete installation faster and with fewer errors.

Front-panel LED indicators show power status and relay condition in real time. Thus, operators instantly recognize abnormal voltage conditions. Consequently, they troubleshoot systems more quickly and safely. Overall, the SDV FH6 prevents equipment failure and improves electrical system reliability.

Key Features and Specifications

Product Name: SDV FH6 Voltage Sensor / Monitoring Relay
Function: Over-Voltage and Under-Voltage Monitoring & Protection

Electrical Characteristics

• Supply Voltage: 3-Phase 380–415 VAC (model dependent), 50/60 Hz

• Voltage Monitoring Type: Over-Voltage & Under-Voltage

Adjustable Protection Settings

• Adjustable Over-Voltage Range: 400 – 480 VAC; therefore, users adapt the relay to different supply conditions

• Adjustable Under-Voltage Range: 300 – 380 VAC; accordingly, users fine-tune protection levels

• Voltage Accuracy: ±2%; thus, the relay monitors voltage reliably

• Response Time: ≤ 1 second; consequently, the relay reacts rapidly

• Reset Method: Automatic; therefore, the system resumes operation without manual reset

• Time Delay (Trip/Reset): Adjustable approx. 0.5 – 30 seconds; as a result, the relay avoids nuisance tripping

Output & Indication

• Output Contact: 1 C/O (SPDT) Relay Output

• Contact Rating: 5A @ 250 VAC (Resistive Load); therefore, users connect standard control circuits easily

• Indication: LED Indicators (Power & Relay Status); thus, operators check status instantly

Mechanical Details

• Mounting Type: DIN Rail Mount; therefore, technicians install it easily

• Terminal Type: Screw Terminal; accordingly, wiring stays secure

• Power Consumption: Low; consequently, the device uses minimal energy

Environmental Conditions

• Operating Temperature: −10°C to +55°C; thus, it works in industrial environments

• Storage Temperature: −20°C to +70°C; moreover, transport and storage remain safe

• Humidity: Up to 85% RH (Non-condensing); therefore, the relay performs reliably

Applications

• Motor Protection; therefore, motors avoid burn-out

• HVAC Systems; additionally, compressors remain safe

• Control Panels; furthermore, control circuits stay stable

• Industrial Automation; accordingly, processes operate smoothly

• Power Distribution Systems; consequently, network safety improves