Omron G2R-2 Miniature Relay

The Omron G2R-2 is a general-purpose small power relay featuring a Double-Pole Double-Throw (DPDT) contact configuration, suitable for a wide range of control scenarios. Below is a summary of its core information:

1. Core Specifications and Features
2. Contact Performance

Rating: AC250V/5A (resistive load) or DC30V/5A; supports inductive loads (e.g., AC250V/2A, cosφ=0.4).

Material: Silver (Ag) alloy contacts with cadmium-free, environmentally friendly design, ensuring high reliability and long service life.

Insulation: Withstands 5,000V between coil and contacts, and 10,000V surge voltage, complying with safety standards.

2. Coil Parameters

Voltage Range: Multiple options available, including DC5V, 12V, 24V, 48V, 100V, or AC12V, 24V, 100V, 200V.

Power Consumption: Approximately 0.53W for DC type, and 0.9VA (at 60Hz) for AC type.

Operating Characteristics: For DC coils, the pick-up voltage is ≤70% of the rated value, and the drop-out voltage is ≥15% of the rated value; for AC coils, the pick-up voltage is ≤80% of the rated value, and the drop-out voltage is ≥30% of the rated value.

3. Physical Design

Dimensions: Approximately 29mm×13mm×29mm, weighing 20g, with a compact size.

Mounting: Plug-in terminals (e.g., P2RFZ-08E socket), supporting PCB or DIN rail mounting, reducing wiring time by 60%.

Environment: Operating temperature ranges from -40℃ to 70℃, humidity from 5% to 85%; resistant to vibration (10-55Hz) and shock (1,000m/s²).

1. Model Selection and Functional Differences

The suffix letters of G2R-2 represent different functional configurations:

-S: Standard type, no additional functions.

-SN: Built-in operation indicator light (LED), supporting circuit status monitoring.

-SD: Built-in freewheeling diode, protecting the circuit from back EMF (electromotive force) impact, suitable for inductive loads.

-SND: Integrates both LED indicator light and diode, ideal for scenarios requiring status feedback and protection.

(S): Equipped with a mechanical operation lever, facilitating manual circuit testing.

For example, G2R-2-SN DC24 refers to a DPDT relay with a DC24V coil and built-in LED indicator; G2R-2-SD AC120 is a model with an AC120V coil and built-in diode.

III. Application Scenarios

1. Industrial Automation

– Controls actuators such as motors, solenoid valves, and contactors, supporting PLC system linkage.

– Typical cases: Signal switching for assembly line equipment, sensor-triggered logic control.

2. Smart Home and Consumer Electronics

– Drives smart switches, curtain motors, and security devices, compatible with development boards like Arduino and ESP32.

– Example: When remotely controlling home appliances via a voice assistant, the G2R-2 can act as a bridge between low-voltage signals and high-voltage loads.

3. New Energy and Power Systems

– Used for battery charge-discharge management and circuit switching of energy storage equipment, meeting high-reliability requirements.

– Example: Controls the on-off of charging circuits in electric vehicle charging piles.

4. Medical and Transportation Equipment

– Enables precise control of medical instruments (e.g., infusion pumps) and status switching of traffic signals.

1. Installation and Accessories
2. Sockets and Terminals

– It is recommended to use Push-In Plus sockets such as P2RFZ-08E, which support quick wiring and reduce installation time by 60%.

– Matching terminal covers (P2CZ-C) and jumper bars (PYDN series) can enhance safety and flexibility.

2. Precautions

– AC/DC coils are distinguished by tape color (e.g., blue for DC, white for AC) to avoid incorrect connection.

– During installation, ensure that the contact load does not exceed the rated value; for inductive loads, a diode or RC snubber circuit must be used in conjunction.

1. Procurement and Alternative Solutions
2. Supply and Price

– In the U.S. market, it can be purchased via WhatsApp: 0086-13811255435. For example, the spot price of G2R-2-S DC12(S) is approximately 11.71 US dollars.

– Some models (e.g., G2R-2-SNI) have been discontinued; it is recommended to prioritize G2R-2-S or G2RL-2A as alternatives.

2. Certification and Compliance

– Complies with international certifications such as UL, CSA, and IEC, suitable for global markets.

– Environmentally friendly design, free of hazardous substances like cadmium and lead.

Selection Recommendations

Basic Control: Choose the standard G2R-2-S model for high cost-effectiveness.

Status Monitoring: Select models with the -SN suffix (e.g., G2R-2-SN DC24) when an LED indicator is required.

Inductive Loads: Prioritize models with the -SD or -SND suffix, which have built-in diode protection circuits.

Manual Testing: Models with the (S) suffix (e.g., G2R-2-S DC12(S)) facilitate on-site debugging.