Description
TDX100M277/480TT
Modular TDX Transient Voltage Surge Suppressors – 100kA – 277/480 V Un – 3Ph 4W G
The TDX100 series of Transient Voltage Surge Suppressors is designed for critical protection applications. The 100 kA 8/20 μs of surge protection meets the IEEE C62.41.2 Scenario II single shot surge rating requirements for exposed service entrance locations- Exposure 3.
The NEMA-4 weather tight housing allows the TDX to be installed on indoor or outdoor service panels. The preconfigured connecting leads simplify installation.The unique narrow construction allows the SPD ti fit between adjacent panel boards and connect via a 90 degree elbow. A flush mounting kit is also available for installing the SPD in drywall applications.
Listed as a Type 1 SPD to UL 1449 Edition 3, The TDX Series can be installed within a Type 1 or 2 location in accordance with NEC 2008.
Main Features
- Transient Discriminating (TD) Technology provides increased service life
- Modular design allows easy replacement of surge modules
- Built-in features include TD Technology, thermal protection and short circuit current fusing
- Compact NEMA®-4 enclosure design can be flush mounted or installed in a small space
- Status indication flag per mode, voltage presence LEDs, audible alarm and voltage-free contacts providing remote status monitoring
- 100 kA 8/20 μs maximum surge rating provides protection suitable for main-distribution panels and an extended operational life
Frequently Asked Question
Q: What is the recommended protection size (fuse) for the TDX100M277/480TT?
A: Circuit breakers or HRC fuses are to be used as external protection, and existing protection may be used if it meets the following requirements. HRC fusing or D-curve breakers are less likely than C-curve breakers to suffer from nuisance tripping. This external fusing is primarily for protection against fault of the surge protection circuit wiring rather than failure of the surge diverter, so it is important to remember that the fuses/circuit breakers rating are limited by the connection wiring size as per standard wiring regulations. As TDX models are supplied with 5.26mm2 leads pre-fitted then 32A fusing would be typical.
