Part of the Omron Solid State Relays series — see the full model table, lifecycle status and replacement parts.
Omron G3NA-210B-UTU DC5-24 — 10 A AC Zero Cross SSR
SKU: G3NA-210B-UTU DC5-24USD 16.00
Panel-mount solid-state relay with zero-cross switching, 10 A continuous load at 24-240 VAC with heat sink (0.1-4 A without)
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Product Overview
The Omron G3NA-210B-UTU DC5-24 is the AC-output 10 A solid-state relay in Omron's G3NA family — the right pick when you need to switch 24-240 VAC loads (heating elements, lighting, single-phase motor windings, solenoid coils, transformer primaries) at high cycle rate, with no contact wear, no audible clicking, and zero-cross switching that eliminates the inrush current typical of cold heaters and incandescent lamps. manufactured by Omron Corporation. Hengyixin Automation stocks this solid-state relay in Xiamen and ships within 3-5 business days to most Asian, European, and North American ports. The DC5-24 control input accepts 5-24 VDC signals from a CJ-series transistor output (CJ1W-OD211 / -OD212), a CP1E-N20DT-D transistor output, or any PLC sourcing output, with an LED indicator that lights when the relay is energized. G3NA = G3NA series Solid State Relay (phototriac output, screw mount, panel-mount); 2 = 200 VAC class load voltage (G3NA-2 = 200 V class); 10 = 10 A load current; B = screw terminals (vs no suffix = PCB pin); UTU = UL/CSA certified AND TÜV certified (the 'TÜV' trailing T is what makes this 'UTU' instead of just 'U'); DC5-24 =.
Key Features
- VDRM 600 V
- Load voltage range 24-240 VAC
- Load current 0.1 to 10 A continuous
- Load current 0.1 to 4 A without heat sink
- SKU: G3NA-210B-UTU DC5-24
- Series: G3NA Solid State Relays (panel-mount, AC zero-cross output)
- Voltage: 200 VAC
Best-Fit Applications
- Process-heater control on a plastics-extrusion line — CJ1W-OD212 PNP sourcing output drives the G3NA-210B-UTU DC5-24 control input; the AC output.
- Commercial-coffee-machine boiler element switching — G3NA-220B-UTU 20 A switches a 3 kW 230 VAC boiler heating element from a CJ1M-CPU13.
- Incandescent / halogen lamp dimming stage on a food-warming display cabinet — G3NA-220B-UTU 20 A switches 230 VAC halogen lamps.
Buying Checklist
- Pick G3NA-D210B-UTU DC5-24 for DC-DC switching — for 5-200 VDC loads instead of AC
- Pick G3NA-205B-UTU DC5-24 for 5 A AC version — for lighter loads like indicator lamps, small solenoids
- Pick G3NA-220B-UTU DC5-24 for 20 A AC version — for high-current heaters, motors, transformers up to 20 A
Technical Specifications
| Model | G3NA-210B-UTU DC5-24 |
|---|---|
| Series | G3NA Solid State Relays (panel-mount, AC zero-cross output) |
| Type | Zero-cross solid state relay, AC output, screw terminals |
| Output Configuration | 1-pole, normally-open (SPST, zero-cross turn-on) |
| Rated Load Voltage | 200 VAC class (24 to 240 VAC operating range) |
| Operating Voltage Range | 19 to 264 VAC |
| Rated Load Current (with heat sink at 40°C) | 0.1 to 10 A continuous |
| Rated Load Current (without heat sink at 40°C) | 0.1 to 4 A continuous |
| Inrush Current (1 cycle, 60 Hz) | 150 A peak (non-repetitive) |
| VDRM (Peak Repetitive Off-State Voltage) | 600 V (reference value) |
| Output Element | Phototriac (no moving parts) |
| Control Input Voltage | 5 to 24 VDC |
| Operating Input Voltage Range | 4 to 28 VDC |
| Pickup Voltage | 4 VDC max |
| Dropout Voltage | 1 VDC min |
FAQ for G3NA-210B-UTU DC5-24
Can the G3NA-210B-UTU DC5-24 switch DC loads like a 24 VDC solenoid?
No — the G3NA-210B-UTU is for AC loads only. The internal triac requires AC voltage reversals (zero crossings) to break the circuit when the control signal is removed. On a DC load, the triac would latch ON permanently once activated, because DC has no zero crossing — meaning the load stays energized even after the control signal is removed, potentially causing equipment damage or fire.
Why is a heat sink required for the G3NA-210B-UTU at 10 A?
The SSR's triac dissipates power during conduction (typically 1.6 V × load current = 16 W at 10 A). Without a heat sink, the only cooling is natural convection off the SSR's metal base — sufficient for 4 A (6.4 W loss) but inadequate for 10 A. The internal triac junction would reach 125 °C at 10 A without a heat sink, exceeding the 125 °C Tj(max) rating within 30 minutes of operation.
What's the difference between G3NA-210B-UTU and G3NA-210BL-UTU?
Both are 10 A 200 V class SSRs with screw terminals, but they differ in switching behavior: G3NA-210B-UTU (this SKU) is zero-cross — it synchronizes turn-on to the next AC voltage zero crossing after the control signal is received, eliminating inrush on cold heater loads. G3NA-210BL-UTU is non-zero-cross (or 'random phase') — it turns on immediately when the control signal is received, regardless of where the AC sine wave is.
What cable wire size does the G3NA-210B-UTU accept?
The G3NA-210B-UTU M3.5 screw terminals accept up to 8 mm² / AWG 8 wire (cross-section), which corresponds to maximum 50 A continuous current at 600 V in standard panel-wiring practice. For a 10 A continuous load, the minimum recommended wire size is 2.5 mm² / AWG 14 (16 A rated) — using larger wire than minimum is acceptable but adds cost and effort.
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