TVS4EMA48AC

Surge Suppressor, Service Voltage, 480kA/PH, 3PH/4W, 277/480VAC, NEMA 3R/12, EMA

**Overview**

The Surgelogic® EMA Series surge protective device is a modular parallel transient voltage surge suppressor TVSS. The EMA device has multi-stage suppression circuits consisting of field-proven, fast-acting metal oxide varistors MOVs. A surge suppression path is provided for each mode, line-to-neutral L-N, line-to-line L-L, line-to-ground L-G, and neutral-to-ground N-G. Each surge suppression mode is individually fused and uses circuitry with thermal cutouts to isolate the TVSS and ensure shutdown in the event of MOV damage during severe overvoltages, even when operated on high-fault current power systems. The suppression elements are encapsulated in a UL® Recognized potting material, another performance element that provides additional protection. A filter provides EMI / RFI noise attenuation. On-line diagnostics continuously monitor the device status, and LEDs signal a loss of a suppression circuit. An audible alarm with an enable/disable feature and dry contacts are included in the standard diagnostic package.

**Features**

* External Mounting Next to Panelboards, Switchboards, Switchgear, or Motor Control Centers MCCs

* Individually Fused Suppression Modes

* Thermal Cutout

* Copper Bus Bar Construction

* Solid State Bi-Directional

* Push-to-Test On-Line Diagnostic Display

* Front Panel Alarm with Enable/Disable Switch

* LED Indicators Indicate Loss of Protection, or Fully Operational Circuit

* High-Energy Parallel Design for ANSI/IEEE C62.41 and C62.45 Category B and C3 Applications

* Duty Cycle Tested ANSI C62.41 C3, 10 kA, 20 kV Minimum 5000 Impulses

**Specifications**

* Standard Internal 200 kA Surge Rated Fusing, 200 kA Short Circuit Current Rating

* Listed to UL1449 Second Edition and UL1283

* Meets ANSI/IEEE C62.41 and C62.45, and UL Category Section 37.3

* NEMA Ratings: 1, 3R and 12 Outdoor

* Short Circuit Current Rating: 200 kA

* EMI / RFI Filtering Up to -30 dB 100 kHz to 100 MHz

* 10-Year Warranty

* UL 1449 Listed

* UL 1283 Listed