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The Omron G2R-1 230VAC is a general-purpose electromechanical power relay with a 230 V AC coil and one SPDT changeover contact. It is monostable: with the coil de-energised, the common terminal is connected to the normally closed contact. Energising the coil transfers it to the normally open contact, and removing power returns it to its rest position.
It allows a load to be switched from an electrically separate control circuit. It can be incorporated into control boards and automation equipment, or used as a replacement where the coil voltage, pin layout and load requirements match.
The five straight pins are intended for soldering to a printed circuit board. The relay is also compatible with the SWITCHTRONIX RL1A601 DIN-rail socket, allowing the wiring to remain on the socket and the relay to be replaced without desoldering. Follow the relay connection diagram, which shows the relay from below, and the socket terminal markings when using a base. Allow at least 5 mm between adjacent relays on a PCB to limit mutual heating.
Switching capacity depends on the load: resistive and inductive ratings are listed separately in the specifications. For motors, solenoids and other loads with inrush current, check the actual operating conditions and any required surge suppression. Maximum voltage, current and switching power must not be treated as simultaneously permissible ratings. Supply the coil at its rated voltage; the maximum of 140 % at 23 °C is not a continuous voltage rating.
Disconnect both the coil and load supplies before wiring or replacing the relay. The enclosure is flux-protected rather than fully sealed, so immersion and ultrasonic cleaning must not be used. Follow the manufacturer's soldering and mounting instructions.
| Brand | Omron |
| Model | G2R-1 230VAC |
| Electrónica Embajadores code | RL3A818 |
| Series | G2R |
| Type | General-purpose electromechanical power relay |
| Relay function | Monostable |
| Contact configuration | SPDT, 1 CO (1 changeover contact) |
| Number of poles | 1 |
| Number of pins | 5 |
| Terminal type | Straight PCB pins |
| Mounting | Direct PCB soldering or compatible socket; RL1A601 DIN-rail socket |
| Enclosure protection | Flux protected |
| Contact material | AgSnIn |
| Coil polarity | Non-polarised |
| Rated coil voltage | 230 V AC |
| Rated frequency | 50/60 Hz |
| Rated coil current | 4.7 mA at 50 Hz; 3.8 mA at 60 Hz; at 23 °C, tolerance +15 %/−20 % |
| Coil resistance | 26 850 Ω at 23 °C; reference value |
| Must-operate voltage | ≤ 80 % of rated voltage, at 23 °C |
| Must-release voltage | ≥ 30 % of rated voltage, at 23 °C |
| Maximum coil voltage | 140 % of rated voltage at 23 °C; maximum within a varying operating voltage range, not a continuous rating |
| Rated resistive load | 10 A at 250 V AC (cos φ = 1); 10 A at 30 V DC |
| Rated inductive load | 7.5 A at 250 V AC (cos φ = 0.4); 5 A at 30 V DC (L/R = 7 ms) |
| Rated carry current | 10 A |
| Maximum switching current | 10 A |
| Maximum switching voltage | 380 V AC; 125 V DC; subject to the switching-capacity curve |
| Maximum switching power, resistive load | 2 500 VA AC; 300 W DC; within the switching limits |
| Maximum switching power, inductive load | 1 875 VA AC (cos φ = 0.4); 150 W DC (L/R = 7 ms); within the switching limits |
| Contact resistance | ≤ 30 mΩ, initial value |
| Operate time | ≤ 15 ms at rated coil voltage, excluding contact bounce |
| Release time | ≤ 10 ms, AC coil at rated voltage, excluding contact bounce |
| Maximum mechanical operating frequency | 18 000 operations/h |
| Maximum electrical operating frequency | 1 800 operations/h under rated load |
| Insulation resistance | ≥ 1 000 MΩ at 500 V DC, initial value |
| Dielectric strength, coil to contacts | 5 kV AC, 50/60 Hz, for 1 min |
| Dielectric strength between contacts | 1 kV AC across open contacts of the same pole, 50/60 Hz, for 1 min |
| Mechanical endurance | ≥ 10 000 000 operations, AC coil, at 18 000 operations/h |
| Electrical endurance | ≥ 100 000 operations, at 1 800 operations/h under rated load |
| Operating temperature | −40 °C to +70 °C, with no icing |
| Operating humidity | 5 % to 85 % relative humidity |
| Maximum dimensions | 29 × 13 × 25.5 mm, body length × width × height, excluding pins |
| Weight | Approximately 17 g |
