Omron G2R-2-SND DPDT DC Relay with LED and Diode

G2R-2-SND: DC-coil two-pole relay with LED and diode

The Omron G2R-2-SND is the DC-coil version of the two-pole slim relay that combines a LED indicator with a built-in diode across the coil. The diode suppresses the voltage spike produced when a DC coil is switched off, protecting PLC outputs and transistors. Seven Star LLC supplies the G2R-2-SND in Oman and the GCC as an independent supplier in Muscat, and the sections below explain the code and the ordering points.

• G2R is the slim power relay series.
• 2 means two poles, DPDT, 5 A.
• S means plug-in terminals.
• ND means LED indicator and a built-in diode.
• Only DC coils are offered in this version: 6, 12, 24 and 48 V, with the coil voltage and (S) added at order.

Because the diode is polarity-sensitive, the G2R-2-SND must be wired with the correct coil polarity, unlike the plain G2R-2-S.

G2R-2-SND technical specifications

Diode versions have release times up to 20 ms, slightly longer than plain relays, because the diode holds the coil current as it decays. This should be considered in fast sequences.

How G2R-2-SND switches and what the options add

When a DC coil is switched off, the collapsing magnetic field generates a reverse voltage that can be many times the supply. A diode wired across the coil conducts that current and dissipates the energy in the coil resistance, so the spike seen by the driving transistor is limited to a small forward drop.

The cost of that protection is a slower release: the datasheet gives up to 20 ms for diode models compared with 10 ms for plain DC 2-pole relays. The LED shows the coil state, and the mechanical flag shows contact position. Polarity matters; connecting the coil backwards will conduct through the diode and can damage the circuit.

Coil data for G2R-2-SND

Only DC coil voltages are available for diode versions: 6, 12, 24 and 48 V.

Must-operate voltage is 80% max. of rated for AC coils and 70% max. for DC coils; must-release voltage is 30% max. for AC and 15% min. for DC. Maximum voltage is 110% of rated. Power consumption is approx. 0.9 VA at 60 Hz for AC and approx. 0.53 W for DC.

Sockets and related parts for G2R-2-SND

The G2R-2-SND uses the same 8-pin sockets as other 2-pole G2R relays: P2RF-08-PU, P2RF-08, P2RF-08-E, P2RFZ-08-E and P2R-08P, P2R-087P, P2R-08A. If you need a test button as well, G2R-2-SNDI adds it. For AC coils the diode versions are not offered.

Accessories listed with the series include short bars, label sheets (XW5Z-P4.0LB1 for Push-In Plus and XW5Z-P2.5LB1 for screw sockets), mounting tracks PFP-50N, PFP-100N and PFP-100N2, end plate PFP-M and spacer PFP-S. P2RF-@-E sockets are finger-safe and require forked, not round, crimp terminals.

Selection and ordering checklist for G2R-2-SND

Confirm the following before requesting a quotation for G2R-2-SND.

• Confirm a DC coil supply at 6, 12, 24 or 48 V.
• Decide if diode protection is needed because the coil is driven by transistors or PLC outputs.
• Check that the 20 ms release time is acceptable.
• Check loads against 5 A per pole at 250 VAC / 30 VDC.
• Choose an 8-pin socket type.
• Make sure wiring polarity is documented for maintenance.

Installation, commissioning and maintenance of G2R-2-SND

Wire the coil with correct polarity as marked on the relay and socket. The LED lights when the coil is energised.

• Verify polarity with a meter before inserting the relay.
• Test release time in time-critical sequences.
• Add suppression on inductive loads.
• Keep a spare of the same coil voltage.
• Mark diode versions on the panel drawing so they are not replaced by plain relays inadvertently.

Typical G2R-2-SND applications in Oman and the GCC

Diode-protected DC relays are common in 24 VDC control systems where PLC transistor outputs drive many relays: pump stations, motor control centres, package controls and fire-and-gas interfaces. In Oman and the GCC the G2R-2-SND appears where electronics reliability matters.

Battery-backed 24 VDC systems in remote sites benefit from the diode, since it keeps the relay from injecting spikes into sensitive electronics. Polarity labelling reduces mistakes during site maintenance.

G2R-S family compared with G2R-2-SND

The G2R-S range is built from one body with a set of options added through the suffix letters. The table shows the available combinations, with G2R-2-SND highlighted by its row.

Information to send with an RFQ for G2R-2-SND

• Part number G2R-2-SND with DC coil voltage.
• Quantity of relays and sockets.
• Load on each pole.
• Socket type.
• Whether a test-button version is preferred.
• Delivery location.

Documents and quotation

A datasheet for the G2R-S series is attached on this page, covering the model legend, coil and contact data, approved standards, sockets and precautions for G2R-2-SND.

Seven Star LLC is an independent supplier in Muscat and is not affiliated with the manufacturer. Send the part number G2R-2-SND with the coil voltage and quantity, and we will confirm availability and lead time for Oman and the GCC.