SUPPRESSED VOLTAGE RATING

SUPPRESSED VOLTAGE RATING Published on Underwriting Laboratories Website*
UL let through voltage categories		Suppressed Voltage Rating	Smart Power Systems** COPIER GUARDIAN
Greater than	Less than	Suppressed Voltage Rating	L-N	L-G	N-G
>900	<1000	1000
>800	<900	900
>700	<800	800
>600	>700	700
>500	>600	600
>400	>500	500
>330	>400	400
Best	<330	330	x	x	x

Compare test results - Smart Power Systems™ - ESP™ - EFI™ - Panamax™

From UL website: "UL evaluates surge suppressors for fire, electric shock and personal injury hazards, and also measures and categorizes the devices for how much voltage they can "clamp", thus preventing excess voltage from passing through to electronic equipment."

UL refers to this as a suppressed voltage rating. With ranges from 330V (volts) to 4000V. Any let through under 330V gets a 330V rating. A higher suppressed voltage rating means higher voltage let through.

** SmartPower Systems - The Copier Guardian is a computer grade filter. For specifications click here.
ANSI/IEEE C62.41 Surge test:
• L-N & L-G is less than 10 volts let through on surges and spikes
• N-G is less than 0.5 volts let through on surges and spikes

Note: Discontinued models are removed from the UL website. Any change in internal components requires UL approval and may require retesting to be UL listed.