![Belimo EFX120-S N4H Damper Actuator, 270 in-lb [30 Nm], Spring return, AC 100...240 V, On/Off, 2x SPDT, NEMA 4](https://hsgroupexport.com/wp-content/uploads/2025/08/EFX120-S_N4H-product_retina-1-300x300.jpg)
1SCA153518R1001 / OXB400E3S3QT ABB true purpose-built automatic transfer switch, engineered to incorporate switch and controller in one seamless unit.
The all-new TruONE is the world’s first true purpose-built automatic transfer switch, engineered to incorporate switch and controller in one seamless unit. Performance tested beyond standard requirements, TruONE stands ready to ensure the steady delivery of critical power at all times. Its self-cont
ained design reduces the number of wires and connections, which speeds installation and minimizes the potential for connection failures to ensure best-in-class reliability. Its predictive maintenance and modular components reduce downtime and service costs. And its advanced connectivity is ready for the future. Every TruONE features a wide voltage range from 200 to 480 VAC (with +/-20% tolerance), reducing the need to stock multiple SKUs, reducing inventory and saving space in the warehouse. Main characteristics of this particular TruONE type: Open style ATS, delayed transition type I-O-II operation, Level 3 controller (LCD)
