ABB Automatic Transfer Switches

ABB Automatic Transfer Switches 
The OTM series introduces a new generation of controllers, the 20DN and 21DN.
Customer value of OTM 20DN/21DN products.
1. Current range 160~800A (1000-2500A products will be released later), to meet the application requirements of non-standard boxes and distribution cabinets.
2.21DN controller supports Modbus communication function (with communication module), combined with the upgraded OTM 21D 32A-125A (replacing 21T products), providing a full range of digital solutions.
3. The controller has a stylish appearance, good sealing, and is suitable for a wide range of environments.
4. The controller can be installed separately on the door of the distribution cabinet, which is convenient for users to set parameters and monitor the power supply status.
5. Anti-surge capability is increased by 1 times (line-to-ground 4kV, line-to-line 2kv), which is suitable for harsh power occasions.
6. The switch body adopts OT isolation switch, modularized design, safe and reliable.
7. Standardly equipped with “fire cut-off” function, no need to purchase another special module.
8. The external dimensions of the product are consistent with the existing 20D/21D products.
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