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Telecommunication Surge Protection Devices

Use telecommunication surge protection devices to protect your telecommunications lines against lightning strikes, voltage spikes, power surges, and other transients. These lines are often in highly exposed areas and left unprotected at the primary and secondary. You’ll find surge protection devices suitable for primary, secondary, and security applications below. Need help to find the best surge protection solutions? The Surge Protection Device Selection Tool helps you select SPDs for a broad range of applications from small data rooms to enterprise data centers.

ASCO Model 136 (Edco FAS-31XT) Surge Protective Device

Single-pair telephone or data line protectors that implement advanced two-stage hybrid design.

ASCO Model 135 (Edco H Series) Surge Protective Device

Ultra high-speed fused solid-state secondary protectors for KEY/PABX systems.


Allows Edco’s H-Series, COHP, OPX, PB Series and other similar surge suppressors to access ground when snapped onto the 66MI-50 Punch Down Block.

ASCO Model 131 (Edco OPX-SPK) Surge Protective Device

These protectors are intended to be used in conjunction with the Edco MGB Ground Rail and a standard MI-50 Punch Down Block.

ASCO Model 130 (Edco PB Series) Surge Protective Device

Solid-state protectors for Intercom Extension Pairs. As a new alternative to the “OPX”, the standard Edco intercom protector, the PB adds fusing and a new component layout.

ASCO Model 171 (Edco PC2-TEL) Surge Protective Device

Solid state, two-line telephone interface protector module.

ASCO Model 152 (Edco TCS-T1) Surge Protective Device

Equipment for T1 line protection against damaging transients.

ASCO Model 150 (Edco TER Series) Surge Protective Device

Surge suppressor that directly installs onto electronic circuit wiring terminal screws.

ASCO Model 146 (Edco PLP-S) Surge Protective Device

The PLP series of products provide isolated power loop circuit protection in applications where a higher current is required, such as fire alarm and security systems.

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