The TE/XP Series is a non-modular parallel suppressor designed for service entrance or downstream panelboard applications. The TE/XP is a multi-stage suppression circuit consisting of field proven, fast acting 40mm MOVs. A redundant surge suppression path is provided for each mode (L-N or L-L, L-G, N-G) guaranteeing continuous service. 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 TE/XHP is UL 1449 Second Edition Listed, and qualified for service entrance applications under Section 37.3 for their most severe, 25kA, fault current test.

Design Features

bulletIndividually Fused Suppression Modules
bulletSolid State Bi-directional
bulletOperational Indicators (LED) to indicate loss of protection or circuit fully operational
bulletHigh Energy Parallel Design for Category A, B, and C3 applications
bulletFor External Mounting next to panelboards, switchgear or motor control centers
bulletAC Tracking Filter with EMI/RFI Filtering up to -50dB from 100kHz to 100MHz


bulletFive Year Warranty: Includes unlimited module replacement
bulletBurn-in Tested Prior to Shipment
bulletShort Circuit Withstand Tested to 100KAIC

Performance Features

bulletSurge Capacity    L-N     L-G     N-G
50kA/phase         25k     25k     19.5
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 +60oC
bullet External Mount NEMA 1 Standard (other NEMA enclosures are available)
Standard Size: 6"x 6"x4" (LxWxD)
bulletWeight: 8 Lbs.



Service Voltage






TE/1XP 120/240V Split Phase 330 330 330 700 150
TE/11XP 120V Single Phase 330 330 330   150
TE/12XP 240 Single Phase 600 600 60 275
TE/2XP 120/208V 3-Phase WYE 330 330 330 700 150
TE/3XP 120/240V 3-Phase Hi-leg  Del  330/
330 700/
TE/4XP 277/480V 480V 3-Phase WYE 700  700 600  1200 320

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

Example: TE/2XP/DC

/AA Audible Alarm

/DC The Dry Contacts monitor each phase providing a summary alarm. The contacts are terminated in a DB-9 connector.

/RM Remote Monitor with indicator lights and audible alarm is available for use with the Dry Contact Option. Note: Remote Monitor uses the Dry Contact option so that it is not available for Customer use.

/FM Flush Mount option adds a flush mount plate for installation.

/04 NEMA 4/3R enclosure. Requires customer installed liquid tight conduit fittings for input wiring.

/12 NEMA 12 enclosure.