Solid State Relays - G3NA - Ordering Information, Model Number Structure, and Specifications

Oct 12, 2026

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Solid State Relays G3NA provide compact, uniform mounting dimensions and include a built-in varistor to absorb external surges (with one model exception). The operation indicator supports monitoring, and a protective cover improves safety. The document explains certification coverage (UL, CSA, TÜV), the scheduled closing of certain orders, and how to interpret the G3NA model number structure. It also lists ordering models with isolation and zero-cross function options, provides load/applicable voltage notes, and details compatible accessories such as mounting plates and heat sinks.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages19

Reading Time48 min

AccessFree to download

Key Features

Model Number Structure

Basic Model Name

Load Power Supply and Rated Voltage/Current

Terminal Type, Zero Cross Function, Certification

Ordering Information

List of Models

Accessories (Order Separately)

One-touch Mounting Plates

Heat Sinks

DIN-track Mounting

Screw Mounting

Specifications

Ratings

Solid State Relays G3NA The reliable choice for Hockey-puck-style Solid State Relays. Available in a Wide Range of Currents. • All models feature the same compact dimensions to provide a uniform mounting pitch. • Built-in varistor effectively absorbs external surges.(except G3NA-D210B-UTU) • Operation indicator enables monitoring operation. • Protective cover for greater safety. • Certified by UL, CSA, and TÜV. Refer to Safety Precautions for All Solid State Relays. Model Number Structure For the most recent information on models that have been certified for safety standards, refer to your OMRON website. The following models are scheduled to close the order at the end of March 2020. • Models without "-UTU" (Not certified by TÜV) • Models with rated input voltage "AC 100-120" and "AC 200-240". ■ Model Number Legend G3NA-@@@@@-@ 1 2 3 4 5 6 7 1. Basic Model Name G3NA: Solid State Relay 2. Load Power Supply Blank: AC output D: DC output 3. Rated Load Power Supply Voltage 2: 200 VAC or 200 VDC 4: 400 VAC 4. Rated Load Current Note: Not all combinations of current and voltage are available. 05: 5 A 10: 10 A 20: 20 A 25: 25 A 40: 40 A 50: 50 A 75: 75 A 90: 90 A 5. Terminal Type B: Screw terminals 6. Zero Cross Function Blank: Equipped with zero cross function (AC-output models only) 7. Certification UTU: Certified by UL, CSA, and TÜV G3NA Ordering Information ■ List of Models | Isolation | Zero cross
function | Indicator | Applicable output load
(See note 1.) | Rated input
voltage | Model | | --- | --- | --- | --- | --- | --- | | Phototriac | Yes | Yes | 5 A at 24 to 240 VAC (See note 2 .) | 5 to 24 VDC | G3NA-205B-UTU DC5-24 | | Photocoupler | | | | 100 to 240 VAC | G3NA-205B-UTU AC100-240 | | Phototriac | | | 10 A at 24 to 240 VAC (See note 2 .) | 5 to 24 VDC | G3NA-210B-UTU DC5-24 | | Photocoupler | | | | 100 to 240 VAC | G3NA-210B-UTU AC100-240 | | Phototriac | | | 20 A at 24 to 240 VAC (See note 2 .) | 5 to 24 VDC | G3NA-220B-UTU DC5-24 | | Photocoupler | | | | 100 to 240 VAC | G3NA-220B-UTU AC100-240 | | Phototriac | | | 25 A at 24 to 240 VAC (See note 2 .) | 5 to 24 VDC | G3NA-225B-UTU DC5-24 | | Photocoupler | | | | 100 to 240 VAC | G3NA-225B-UTU AC100-240 | | Phototriac | | | 40 A at 24 to 240 VAC (See note 2 .) | 5 to 24 VDC | G3NA-240B-UTU DC5-24 | | Photocoupler | | | | 100 to 240 VAC | G3NA-240B-UTU AC100-240 | | Phototriac | | | 50 A at 24 to 240 VAC (See note 2 .) | 5 to 24 VDC | G3NA-250B-UTU DC5-24 | | Photocoupler | | | | 100 to 240 VAC | G3NA-250B-UTU AC100-240 | | Phototriac | | | 75 A at 24 to 240 VAC (See note 2 .) | 5 to 24 VDC | G3NA-275B-UTU-2 DC5-24 | | Photocoupler | | | | 100 to 240 VAC | G3NA-275B-UTU-2 AC100-240 | | Phototriac | | | 90 A at 24 to 240 VAC (See note 2 .) | 5 to 24 VDC | G3NA-290B-UTU-2 DC5-24 | | Photocoupler | | | | 100 to 240 VAC | G3NA-290B-UTU-2 AC100-240 | | | | | 10 A at 200 to 480 VAC | 5 to 24 VDC | G3NA-410B-UTU DC5-24 | | | | | | 100 to 240 VAC | G3NA-410B-UTU AC100-240 | | | | | 20 A at 200 to 480 VAC | 5 to 24 VDC | G3NA-420B-UTU DC5-24 | | | | | | 100 to 240 VAC | G3NA-420B-UTU AC100-240 | | | | | 25 A at 200 to 480 VAC | 5 to 24 VDC | G3NA-425B-UTU-2 DC5-24 | | | | | | 100 to 240 VAC | G3NA-425B-UTU-2 AC100-240 | | | | | 40 A at 200 to 480 VAC | 5 to 24 VDC | G3NA-440B-UTU-2 DC5-24 | | | | | | 100 to 240 VAC | G3NA-440B-UTU-2 AC100-240 | | | | | 50 A at 200 to 480 VAC | 5 to 24 VDC | G3NA-450B-UTU-2 DC5-24 | | | | | | 100 to 240 VAC | G3NA-450B-UTU-2 AC100-240 | | | | | 75 A at 200 to 480 VAC | 5 to 24 VDC | G3NA-475B-UTU-2 DC5-24 | | | | | | 100 to 240 VAC | G3NA-475B-UTU-2 AC100-240 | | | | | 90 A at 200 to 480 VAC | 5 to 24 VDC | G3NA-490B-UTU-2 DC5-24 | | | | | | 100 to 240 VAC | G3NA-490B-UTU-2 AC100-240 | | | --- | | 10 A at 5 to 200 VDC | 5 to 24 VDC | G3NA-D210B-UTU DC5-24 | | | |

FAQs

What are the main features of the G3NA solid state relays?

G3NA relays share compact uniform dimensions, include a built-in varistor for surge absorption (except the specified model), and offer an operation indicator for monitoring. A protective cover is also provided for safety.

How does the document describe the G3NA model number structure?

The model number is decomposed into fields such as basic model name (G3NA), load power supply (AC/DC), rated load voltage and rated load current, terminal type, zero-cross function, and certification suffix (e.g., UTU).

What information is given in the ordering information section?

The ordering section lists available models with isolation type, whether zero-cross function and indicator are included, applicable output load and rated input voltage ranges, plus notes about load conditions and loss time. It also indicates that order closure is scheduled for the end of March 2020 for specified model groups.

Oct 12, 2026

Upload by Ben