| Low Voltage Secondary Arresters
Type S4 Arresters
Type S4 MOV secondary arresters are indoor- or outdoor-mounted arresters for protecting low-voltage equipment, secondary distribution
circuits, control circuits and signal circuits. Available in 650 volts ac, Type S4 arresters meet or exceed the requirements of ANSI
C62. 11.
For more information see Catalog Section 235-10.
Type L Arresters
Type L secondary arresters are indoor-mounted arresters for protecting street lighting controls, low-voltage relays, railroad signal
circuits, fire alarm circuits, remote metering, and airport lighting. They are available in 175 volts ac and 125 volts dc.
For more information see Catalog Section 235-10.
Protective Gaps
Protective gaps are auxiliary devices which serve two purposes. (1) They isolate electrical equipment during normal service conditions, and (2) They provide a path to ground
for surge current during arrester operations. Protective gaps provide effective and inexpensive surge protections for the primary neutral of a system (grounded only at the substation) if the
potential of the primary neutral is less than 350 volts (rms) above ground. Transformer tanks can be isolated from ground under normal conditions by connecting the transformer to ground through
a protective gap.
For more information see Catalog Section 235-10.
Storm Trapper® Secondary Arresters
Storm Trapper Secondary Class MOV surge arresters are designed to provide overvoltage protection for low voltage equipment,
distribution circuits, appliances, submersible pumps, motors, and any other electrical apparatus connected to a secondary voltage
source. The Storm Trapper is moisture proof, making it appropriate for indoor or outdoor use, and is available in 175, 350 and
650 volt ratings in one, two or three pole models.
For more information see Catalog Section 235-15.
Storm Trapper H.E. (High Energy) Low Voltage Distribution Class Arresters
Storm Trapper H.E., the industry's first low-voltage distribution class surge arrester, has a 40-kA high-current, short-duration
and a 5-kA duty cycle rating.
The Storm Trapper H.E. is the most durable product available for low voltage applications. Its track record is nearly spotless and the results, in terms of reduction in equipment failures from overvoltages, speak for themselves.
These arresters, when installed on distribution transformer secondaries, can dramatically reduce transformer failure rates.
The Storm Trapper H.E. arrester is moisture proof for indoor or outdoor use, and can be ordered with
a stainless steel case to make it totally non-fragmenting. The Storm Trapper H.E. arrester is designed to provide overvoltage
protection at the low voltage side of a distribution transformer, the service entrance and any other electrical apparatus connected
to a secondary voltage source. Available in one, two and three pole designs in 175, 240, 480 and 650 volt ratings. The VariSTAR
Storm Trapper H.E. is also available in an under-oil mount model with a 480 volt rating.
For more information see Catalog Section 235-16.
Storm Trapper ST120 Surge Suppressors
For interior (point-of-use) surge protection, CPS offers a wide variety of high quality surge suppressors - our Storm Trapper ST120
series. Each offers unique features designed to meet various connections and equipment needs. Used in conjunction with our Storm
Trapper HE or HSE arresters, these surge suppressors offer unsurpassed surge protection for sensitive home electronic devices.
For more information see Catalog Section 235-18.
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