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Omron G6D-F4B DC24V 4-point terminal relay — front view showing the captive screw terminal block (16 M3 Phillips screws for 4 × SPST-NO contacts plus 4 × 24 VDC coils) and the 4 LED indicators above each channel

Omron G6D-F4B DC24V — 4× SPST-NO 3 A Screw-Terminal Relay

SKU: G6D-F4B DC24V

USD 16.50

Compact 4-point terminal relay with 4× SPST-NO mechanical G6D relays, 24 VDC coils, screw terminals, LED indicators. Rated 3 A at 250 VAC / 30 VDC, 5 A carry. Same form factor as PYF-08 socket. Includes short-bar jumper accessory for COM-bus commoning.

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Product Overview

The G6D-F4B DC24V is Omron's 4-point terminal relay in the G6D family — four SPST-NO mechanical relays in a single 31 × 35 × 68 mm package with screw terminals, LED indicators, and built-in coil-surge diodes. The right pick when you need four independent relay outputs on a DIN rail panel with field-side wiring that should be quick (screw terminals) and PLC-friendly (24 VDC coil, low 200 mW power per relay). It is a true terminal relay — the relays are mounted on a captive PCB inside the housing, and the screw terminals are at the field side for easy wire landings.

Decoding the G6D-F4B model number

G6D = G6D mini-relay family (SPST-NO, 5 A max contact, 6.5 mm wide × 15 mm high coil); F4 = 'Four-point' terminal relay form factor (4 relays in one housing); B = screw terminals (vs PU = Push-In Plus terminals). The 'B' vs 'PU' choice is the user-facing wiring method: 'B' for Phillips-head screw terminals that accept ferrule-ended wires and 0.25-2.5 mm² / AWG 24-14 wires; 'PU' for Push-In Plus terminals that accept ferrules directly without screws for faster installation.

Why SPST-NO × 4 vs alternatives

Each of the 4 relays in the G6D-F4B is a single-pole single-throw normally-open contact (Form A / SPST-NO) — when the coil is energized, the contact closes between COM and NO; when de-energized, the contact returns to NO. This is the most common contact arrangement for digital-output-to-isolated-load applications (e.g., 24 VDC PLC output to 230 VAC relay coil via field interposing relay). The 4 SPST-NO configuration gives 4 isolated control paths in one housing — each output has its own load-side wiring, no internal common-bus sharing like the G6B-4BND's DPDT contacts.

Built-in surge protection per channel

Each of the 4 relay coils has a built-in flyback diode across the coil (1N4007 or equivalent), absorbing the back-EMF when the coil is de-energized. This protects the PLC driving the coil from voltage spikes — no external MOV/diode required. The 24 VDC coil draws ~10 mA at 24 V (200 mW coil power); a single CJ1W-OD211 (16-pt NPN sinking) or CJ1W-OD212 (16-pt PNP sourcing) output at 0.5 A/point can drive 40 G6D-F4B relays (40 × 10 mA = 400 mA, well under 500 mA point rating). For higher-current DC coils (>50 mA), consider the G6B-4BND DC24V which has higher 70 mA coil current for larger mechanical relays.

Key Features

  • G6D series 4-point terminal relay
  • 4× SPST-NO mechanical contact sets
  • 24 VDC coil
  • Screw terminals for field-side wiring
  • Compact form factor 31 × 35 × 68 mm
  • Approximate size match to PYF-08 legacy socket
  • Screw terminal torque 0.5 N·m max
  • LED operation indicator per channel
  • SKU: G6D-F4B DC24V
  • Series: G6D Terminal Relays (4-point SPST-NO 5 mm × 20 mm × 12.5 mm mini-relay)
  • Voltage: 24 VDC

Best-Fit Applications

  • 24 VDC PLC output expansion to 230 VAC loads — the G6D-F4B relays accept 24 VDC from CJ1W-OD211 / OD212.
  • Indicator lamp driver on a control panel — 4 relays each switching a 24 VDC / 120 / 230 VAC.
  • Isolated interface between PLC and external equipment — the G6D-F4B provides galvanic isolation between the PLC's 24 VDC logic and.
  • Building-automation light-switching relay panel — 4 SPST-NO relays each controlling a separate lighting circuit; PLC time-clock program cycles lighting via.

Buying Checklist

  • Pick G6D-F4B DC24V for 4× SPST-NO 3 A 24 VDC coil relay terminal — compact terminal-relay block
  • Pick G6D-F4B DC12 for 12 VDC coil version — if PLC output is 12 VDC instead of 24 VDC
  • Pick G6D-F4PU DC24 for Push-In Plus terminals — if you want tool-free wiring instead of screw
  • Pick G6B-4BND DC24V for 4× DPDT 5 A 24 VDC coil — if you need DPDT contacts or higher current rating
  • Pick G3DZ-F4B DC24V for 4× SPST-NO 0.1 A MOSFET output — for silent high-cycle low-current switching
  • Pick G3DZ-F4PU DC24V for Push-In Plus MOSFET version — combine fast wiring + silent switching

Technical Specifications

Model G6D-F4B DC24V
Series G6D Terminal Relays (4-point SPST-NO 5 mm × 20 mm × 12.5 mm mini-relay)
Type 4-point terminal relay with SPST-NO contacts, screw terminals
Number of Relays 4 SPST-NO relays per housing
Contact Configuration SPST-NO × 4 (NOT 4PDT — correction vs old DB)
Coil Voltage 24 VDC
Coil Resistance Approx 2,880 Ω
Coil Power Consumption Approx 200 mW per relay (10 mA at 24 VDC)
Pickup Voltage 70% max of rated voltage (16.8 VDC at 24 VDC coil)
Dropout Voltage 10% min of rated voltage (2.4 VDC at 24 VDC coil)
Rated Carry Current 5 A (continuous, when 1-2 outputs energised)
Max Switching Voltage 250 VAC, 30 VDC
Max Switching Current 5 A (above 3 A rating reduces life expectancy)
Max Switching Capacity (reference) 1,250 VA / 150 W per output
Min Switching Capacity 100 mA at 5 VDC (micropower dry-circuit)

FAQ for G6D-F4B DC24V

Can the G6D-F4B DC24V be driven from a NPN sinking PLC output?
Yes — the G6D-F4B DC24V 24 VDC coil is polarity-sensitive (because of the internal flyback diode). For NPN sinking PLC output (e.g., CJ1W-OD211): connect the PLC output to the coil '+' terminal of the G6D; connect the coil '-' terminal to the 24 VDC supply positive rail. The NPN output sinks current from the coil + to ground when ON, completing the 24 VDC → coil+ → NPN → GND circuit.
How do I tell the difference between G6D-F4B, G6D-F4PU, and G3DZ-F4B?
All three are 4-point terminal relays in similar form factor with 24 VDC coils, but differ in contact type and wiring method. G6D-F4B (this SKU) uses mechanical SPST-NO relays with screw terminals, 3 A / 250 VAC per contact. G6D-F4PU uses mechanical SPST-NO relays with Push-In Plus terminals (tool-free ferrule-direct wiring), same 3 A contact rating as F4B but faster wiring.
What is the G6D-4-SB Short Bar and when do I need it?
The G6D-4-SB Short Bar (sold separately, pack of 5) is an accessory that bridges adjacent same-polarity terminals of a G6D-F4B / G6D-F4PU / G3DZ-F4B housing.
Can the G6D-F4B drive 230 VAC inductive loads like solenoid valves?
Yes — the G6D-F4B's SPST-NO contacts are rated 3 A at 250 VAC, suitable for switching 230 VAC solenoid valves, contactor coils, and small motor windings. Add surge suppression across the AC load (typically a 275 V MOV or an RC snubber across the AC coil terminals) — the G6D-F4B's contacts have no internal surge protection, unlike the coil side which has a flyback diode.

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