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Reliable Omron Relays for Panel Control and Switching

Our relay lineup includes plug-in, power, and interface relays for dependable switching in control cabinets and machine panels.

We assist with coil voltage, contact configuration, and socket/accessory selection to avoid procurement mismatches.

Popular Series and Buying Notes

G2R Series G3PE Series G6B Series G2RV-ST Series G3NA Series G3NB Series
  • Use exact SKU matching for replacements, especially when terminal type and communication suffixes differ.
  • For relays projects, sharing machine model, load profile, and installation environment helps us recommend the right variant faster.
  • Ask for quotation with quantity tiers to compare unit pricing and lead-time options in one response.
  • Common request in this category: 240V variants.
  • Typical configuration demand includes around 5 I/O.

50 products available in this category.

Browse All 50 SKUs in relays
61F-G3 AC100-220V DRT2-ROS16 G2R-2-SND G2R-2-SND DC24(S) G2R-2-SND DC24V G2R-2-SNI DC24(S) G2RV-ST500 DC24 G2RV-ST700 G2RV-ST700 DC24 G3F-203SN-VD G3NA-210B-UTU DC5-24 G3NA-210B-UTU DC5-24V G3NA-450B-UTU-2 DC5-24V G3NA-D210B-UTU G3NA-D210B-UTU DC5-24 G3NB-210B-1 G3NB-225B-1 G3NB-240B-1 DC5-24V G3PA-220B-VD-X DC5-24V G3PE-225B DC12-24V G3PE-225BL DC12-24V G3PE-515B G3PE-535B-3N DC12-24V G3R-ODX02SN-UTU DC5-24 G3R-ODX02SN-UTU DC5-24V G6B-47BND G6B-47BND DC24V G6B-4BND DC24 G6B-4BND DC24V G6D-F4B DC24V G7TC-ID16 DC24V G7Z-4A-02Z-R DC24V H3DK-M2 AC-DC24-240V H3DT-HBL AC-DC24-48V H3YN-2-B DC24V H3YN-4-B DC24 H5CC-A H5CC-AD H5CC-L8D K8AK-AS1 24VAC-DC K8AK-TS1 100-240VAC K8DS-PH1 K8DS-PM2 K8DS-PU2 K8DT-PH1CN LY2N-J DC24 P2CF-08-E P2RFZ-05-E P2RFZ-08-E PYFZ-14-E

Why Choose Omron relays?

Omron relays are the industry benchmark for quality and reliability in switching applications. With a vast portfolio ranging from PCB signal relays to high-power industrial units, they offer a trusted solution for circuit protection, signal isolation, and load switching in any design.

  • Extensive lineup including general purpose, solid-state, power, and signal relays
  • Engineered for high reliability with a long mechanical and electrical service life
  • Compact and miniature designs to maximize board and panel space
  • Low power consumption models for energy-efficient systems
  • Global standards compliance for universal application and integration
  • Push-In Plus terminal technology available for quick and secure wiring
omron industrial relays

Frequently Asked Questions

What's the difference between general-purpose relays and safety relays?
General-purpose relays (G2R, LY): Standard contacts, not certified for safety functions. Suitable for control circuits, signal switching, non-safety interlocks. Safety relays (G7SA, G9SA): Forced guided contacts (EN 50205), certified for safety functions (Category 3/4, PL d/e), monitored contact operation, direct opening action on NC contacts. Never use general-purpose relays for safety circuits (E-stop, safety gates). Safety relays cost more but are legally required for safety functions in machinery.
When should I use a solid-state relay (SSR) vs. electromechanical relay?
SSRs: No moving parts, infinite mechanical life, silent operation, fast switching (ms), zero-cross switching reduces inrush. Ideal for: heating control, frequent cycling, noise-sensitive environments. Drawbacks: Higher cost, heat generation, leakage current. Electromechanical: Lower cost, visible contact gap, can switch AC/DC, higher current capacity. Ideal for: general control, infrequent switching, cost-sensitive applications. For heater control or high-cycle applications, SSRs pay for themselves in reliability.
What's the difference between NPN and PNP relay modules?
This refers to I/O relay modules, not the relay itself: NPN modules: Sinking input/output, common in Asian equipment (Omron, Mitsubishi). PNP modules: Sourcing input/output, common in European equipment (Siemens, Allen-Bradley). Match module type to your PLC's I/O type. Using wrong type won't work without additional wiring or interface relays. G2RV-ST series offers both NPN and PNP variants. Check your PLC manual for I/O type specification.
How do I select the right socket for my relay?
Match socket to relay: 8-pin relays (DPDT): Use PYF-08-E (panel mount), P2RFZ-08-E (DIN rail, push-in terminals). 14-pin relays (4PDT): Use PYF-14-E, P2RFZ-14-E. Consider: 1) Mounting style (panel vs. DIN rail), 2) Terminal type (screw vs. push-in), 3) Marking options (for wire labels). Push-in terminals (P2RFZ series) reduce wiring time by 50%. Always use sockets for easy relay replacement without rewiring.
What's the maximum switching frequency for relays?
Electromechanical relays: Resistive loads: Up to 1800 operations/hour. Inductive loads (contactors, solenoids): Reduce to 600 operations/hour. Higher frequency causes: contact wear, reduced life, potential welding. For higher frequency: Use SSRs (no mechanical wear), or derate contact current. Check datasheet for specific ratings. For cycling applications (temperature control, level control), SSRs are recommended despite higher initial cost.
Do I need flyback diodes for relay coils?
DC coil relays: Yes, always use flyback diodes or RC snubbers when switching DC coils with PLC/solid-state outputs. Prevents voltage spikes that can damage output transistors. AC coil relays: Use RC snubbers for same reason. Many Omron relays (G2R, G6B) have built-in diodes for DC coils (indicated by model suffix). Check relay specifications. PLC relay outputs can switch coils directly; transistor outputs require protection.
What's the difference between contact ratings for resistive and inductive loads?
Resistive loads (heaters, incandescent lamps): Full contact rating applies (e.g., 10A at 250VAC). Inductive loads (contactors, solenoids, motors): Derate to 30-60% of resistive rating. AC-15 rating (inductive): Typically 3A for a 10A relay. Reason: Inductive loads cause arcing when interrupted, accelerating contact wear. Always check AC-15 or DC-13 ratings for inductive loads. For motor loads, consider motor-rated contactors instead of general-purpose relays.