The XTE/HP Series is a modular parallel suppressor designed for service entrance or downstream panelboard applications. The TE/HP is a multi-stage suppression circuit consisting of field proven, fast acting 40mm MOVs. Each surge suppression module is individually fused and utilizes APT’s Patent Pending TranSafe ™ circuitry with thermal cutout to ensure safe operation during severe over-voltages and high fault current conditions. The suppression elements are encapsulated in UL Listed and Patented Ceramgard ® providing another level of safety. A filter network is added to provide wave shape smoothing and a high level of EMI/RFI noise attenuation.

On-line diagnostics continuously monitor the unit status and feature redundant LEDs to signal a reduction in surge capacity or loss of a suppression circuit. An audible alarm with test and silence features is included in the standard diagnostic package. All APT products are designed and tested in accordance with the recommendations and procedures of ANSI/IEEE C62.41 and C62.45. The XTE/HP is UL 1449 Second Edition Listed, and qualified for service entrance applications under Section 37.3 for their most severe, 25kA, fault current test.



bulletIndividually Fused Suppression Modules
bulletThermal Cutout
bulletCopper Bus Bar Connection (1/4" Bus Bar)
bulletSolid State Bi-directional
bulletFront Panel Alarm with Test/Silence Switch
bulletRedundant Operational Indicators (LED) to indicate loss of protection or circuit fully operational
bulletFor External Mounting Next to Panelboards, Switchgear, or Motor Control Centers


bulletFive Year Warranty: Includes unlimited module replacement
bulletBurn-in Tested Prior to Shipment
bulletShort Circuit Withstand Tested to 100KAIC
bulletHigh Energy Parallel Design for Category C3 applications
bulletAC Tracking Filter with EMI/RFI Filtering up to -50dB from 100kHz to 100MHz 

Performance Features

bulletSurge Capacity   L-N     N-G 

             120kA/phase   120k   120k 
         160kA/phase   160k   160k

bulletUL 1449 Second Edition Listed, 1283 Recognized, and CUL
bullet200KAIC Rated Fusing
bulletLess than 1/2 Nanosecond Response Time
bullet5000 Category C3 Impulses with <10% Drift

Environmental Features

bulletRelative Humidity Range: 0 - 95% Non-Condensing
bulletOperating Frequency: 47 - 63 Hz
bulletOperating Temperature: -40oC to +65o
bulletExternal Mount NEMA 1 Standard (Other NEMA enclosures are available)
bulletStandard Size: 10.75"x10.88"x4.5" (LxWxD)
bulletWeight: 9.5 Lbs.



Service Voltage





XTE/1HP 120/240V Split Phase 330 330 700 150
XTE/11HP 120V Single Phase 330 330   150
XTE/12HP 240 Single Phase 600 600   275
XTE/2HP 120/208V 3-Phase, Wye 330 330 700 150
XTE/3HP 120/240V 3-Phase hi-leg Delta 330/700 330 700/1200 150/275
XTE/4HP 277/480 3-Phase WYE 700 600 1200 320
XTE/5HP 480V 3-Phase De;ta     1500 575
XTE/51HP 480V 3-Phase corner grnd Delta     1500 575
XTE/6HP 240V 3-Phase Delta     700 275
XTE/61HP 240V 3-Phase Corner grnd Delta     700 275
XTE/7HP 220/380V 3-Phase Wye 700 600 1200 320
XTE/8HP 347/600V 3-phase Wye 1000 900 1800 420
XTE/9HP 600V 3-Phase Delta     1800 750
XTE/91HP 600V 3-Phase corner grnd Delta     1800 750

Note: XTE 9.91 not available with /CL option

Optional Features

/CL Module Option increases the surge current capacity from 120kA/phase to 160kA/phase.
Integral Disconnect Switch when a spare 3 pole breaker is not available for connecting the
  suppressor, order with an internal disconnect.
  [Increases size to 16"x14"x6 (LxWxD)] Other disconnect options available.

The Dry Contacts monitor each phase providing a summary alarm. The contacts are   terminated in a DB-9 connector.
Remote Monitor with indicator lights and audible alarm is available for use with the Dry Contact Option.
Surge Counter option monitors the occurrence of transients entering the facility through the suppressor and is supplied with a lithium battery to provide power to the counter in the event of a power failure.
Dual LCD Surge Counters (separate counter for L-N and L-G modes).

Ordering information for Optional Features should be appended to the model number and seperated by a slash(/).

Example: XTE/2HP/CL/DS