G4Q-212S

Overview of Omron G4Q-212S

The Omron G4Q-212S is a ratchet relay featuring a double-pole double-throw (DPDT) contact configuration with a unique ratchet mechanism that ensures positive alternate transfer or switching operation at each pulse input. This relay is suitable for applications that require alternate operation or switching, such as motor control. It supports coil voltages including 12 VAC and 24 VAC versions, among others, and is available in both open and cased models.

Key Features

• Contact Form: DPDT (Double Pole Double Throw)
• Rated Coil Voltages Available: 12 VAC, 24 VAC, 50 VAC, 100/110 VAC, 200/220 VAC, 12 VDC, 24 VDC, 100 VDC, 200 VDC (specify coil voltage when ordering)
• Rated Contact Current: 5 A (resistive at 220 VAC or 24 VDC)
• Contact Material: Silver alloy
• Dielectric Strength: 2000 VAC between coil and contacts
• Low Coil Power Consumption: Approx. 6.4 VA (AC), 3.9 W (DC)
• Mounting: Suitable for DIN rail or panel mounting depending on version
• Mechanical Endurance: Minimum 5 million operations
• Electrical Endurance: Minimum 500,000 operations under rated load
• Operating Temperature Range: -10°C to 55°C (no condensation or icing)
• Vibration Resistance: 10 to 55 Hz, 0.5 mm amplitude
• Shock Resistance: 100 m/s² (malfunction), 500 m/s² (destruction)
• Unique ratchet mechanism enables positive alternate transfer operation

Technical Specifications

Applications

The G4Q-212S ratchet relay is ideal for alternate operation or transfer/switching applications such as sequenced motor control, automated switching systems, and industrial machinery requiring reliable pulse-driven contact switching.