51017375 WAGO, 51017375 Datasheet - Page 4

Surge Suppressor

51017375

Manufacturer Part Number
51017375
Description
Surge Suppressor
Manufacturer
WAGO
Series
WAGO-PROTECTr
Datasheet

Specifications of 51017375

Suppressor Type
Data Line
Voltage Rating
24VDC
Output Current
20A
Peak Surge Current
2kA
Response Time
5ns
Connector Type
Cage Clamp Terminal
Mounting Type
DIN Rail
Clamping Voltage Vc Max
60V
Rohs Compliant
No
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
The myth of multi-stage (diode, gas-tube,
and MOV) protection
Multi-stage protection designs are products that utilize SASD (Silicon Diode),
MOV (Metal Oxide Varistor) and/or GDT (Gas Tube) components in the
design. These designs tend to be misleading due to the fact that they use
individual components that have good performance characteristics but are
not the primary components that are being utilized. For example, SASD
circuits may be utilized to take advantage of superior response times and
stable voltage protection levels, while the MOV and GDT components are
used to handle high power dissipation requirements. However, premature
suppressor failure is realized by the SASD components because they simply
do not incorporate enough SASD components to dissipate proper levels of
transient energy. The MOV & GDT components continue to function, but
they are still plagued with the same deficiencies of the pure MOV or GDT
based products. Properly designed surge suppressors utilizing 100% SASDs
(multiple stacked SASD designs) preclude the need for hybrid designs.
Contact WAGO for white paper.
Comparing Silicon Avalanche Diodes vs. MOVs
Common Mode (Ground Suppressing)
Suppressor Hazards
Common mode suppression devices utilize suppression paths to the Ground
circuit through the suppression components. The sole function of the AC
Ground is to provide a low impedance safe path for energy to return to
its source during a “fault” condition. If the suppression components that
are connected to the Ground fail short circuit, a bond would be created
between the Neutral and Ground causing a touch safety hazard and
violation to the NEC Article 250 safety requirements. Another issue that
is caused by suppression devices that are configured in this manner is that
suppression components such as MOV’s and GDT’s tend to leak current as
the components degrade. This causes small amounts of leakage currents to
“bleed” to Ground causing microprocessor based equipment that references
Ground to become corrupt and damage the equipment you are protecting.
Contact WAGO for white paper.
Silicon Avalance Diode
Non–Degrading, clamping voltage provides same level of
protection for many years.
Fastest elimination of transient over voltage (< 5 nanoseconds).
Lowest voltage protection level available - 220 volts for 120 VAC Very high clamping voltages - 300-500 Volts for 120 VAC.
Provides protection against short (20/80µs waveform) and long
impulses (10/100 µs waveform).
Normal mode suppression only (L-N, L- L).
5-year unconditional warranty with and expected useful life of
more than 20 years.
MOVs
Degrade with every surge; as a result the clamping voltage
increases each time.
Slow response to transient over voltages (25 – 50 nanoseconds).
Provides limited protection against short duration impulses
(20/80µs waveform). Not rated for long duration impulses.
Typically normal mode (L-N, L-L) and common mode (L -G,
N-G). Common mode is not necessary in properly wired
facilities and may cause NEC code violations.
1-year limited warranty with a limited useful life expectancy.

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