ISOBLOK® AC Transient Protector

As of: Friday, July 11, 2025

Standard Features

Two outlets, direct plug-in
LED indicator for power on
LED indicator for protection circuitry
UL1449 listed at 330 volts
Mounting clamp assures positive connection

The Isoblok® AC Transient Protector offers two direct plug-in outlets and two LED indicators for power and protection circuitry. The Isoblok AC should be used on lines where spikes, noise and interference occur.

ISOBLOK AC Transient Protector Specifications

Input Voltage:
120 VAC

Clamping Voltage:
140 V rms

Clamping Time:
Less than five nanoseconds

Peak Surge Currents:
6,500 amps

Maximum Current:
15 amps

Maximum Power:
1,875 watts

Noise Suppression:
Frequency Attenuation
50 KHz > 20 db
150 KHz > 40 db
1 MHz > 80 db
> 6 MHz > 30 db

Dimensions:
(L × W × H)
4.15 × 2.37 × 2.31 in

Weight:
Approximately 1 lb

ISOBLOK AC Transient Protector Dimensions

Parts

Part #	Description

21145	AC Protection,Isoblock ISO-2 Dual Outlet