Description
A 16-point triac output module (AC) for LS G4 series I/O, rated for AC 100–240 V and common rating of 8 points/1 COM.
The Polar Energy Assessment:
The G4Q-SS2A is a triac output module, meaning it uses triac devices to switch AC loads.16 output points, AC 100-240 V load, internal current consumption ~330 mA, weight ~350 g. Because triac outputs are used for AC loads (lamps, heaters, fans) this module fits installations where many AC switching points exist.
Pros
- Supports AC load switching using triacs, which tend to handle AC loads better than relays in many cases.
- 16 points gives good density.
Limitations
- Triac outputs can generate more EMI and require careful load balancing.
Typical use cases
- Panel boards where many AC loads need to be switched (lighting, heating elements) and you’re using LS G4 modules.
- Retrofit of older installations using AC-load switching modules.

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