DC Surge Protectors

Power surges occur when there is a sudden increase of voltage sent through a power system from an internal or external force. Such forces can be caused by lightning strikes, electrical overload, faulty wiring or utility switching. Surge protection devices provide a line of defense against power surges preventing irreparable damage to equipment and costly downtime. Surge protection devices are generally classified according to their performance values, depending on the protection class and location of use.

Type 1 surge protection devices are combined lightning current and surge arresters that are used in unmetered areas. They are meant to protect against the effects of direct lightning strikes and must satisfy very stringent requirements. In order to meet these requirements, spark gap technology is required. A spark gap will break down during an abnormal voltage surge, safely shunting the surge to ground.

Type 2 surge protection devices with a low discharge capacity are installed in the metered area. They are generally installed in machine control cabinets or sub-distributions. They do not have to handle direct lightning strikes, but they must be able to discharge over-voltages from indirect lightning strikes or switching operations. Varistor technology is proven itself here.  At low voltage, the varistor has a high electrical resistance which decreases as the voltage increases. When an over-voltage occurs, the varistor’s resistance drops, allowing the extra current to flow through the varistor and safely to ground.

Type 3 surge protection devices with the lowest discharge capacity are installed as close as possible to the end device. The devices have a wide range of designs to suit the various different installation environments. Type 3 surge protection is similar to type two, which is based on varistors, but the requirements concerning discharge capacity are lower compared to type 2.

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$228.75
Type 3 surge protection, consisting of protective plug and base element, with integrated status indicator for 24 VDC power supplies.
$228.75
Type 3 surge protection, consisting of protective plug and base element, with integrated status indicator for 24 VDC power supplies.
$213.75
Universal varistor-based plug-in lightning/surge arrester for 1-phase power supply networks with common N and PE (2-conductor system: L1, PEN), with remote indication contact.
$227.50
Universal varistor-based plug-in lightning/surge arrester for 1-phase power supply networks with common N and PE (2-conductor system: L1, PEN), with remote indication contact.
$172.50
Replacement plug for PV arrester combinations from the VAL-MS-T1/T2 1000DC-PV-... product range
$175.00
Surge protection plug with integrated status indicator on the module for a 3-wire floating Ex i signal circuit. Nominal voltage: 24 VDC
$202.50
Surge protection plug with integrated multi-stage status indicator on the module for three signal wires. For HF applications. Nominal voltage: 5 VDC
$373.75
Surge protection plug with integrated multi-stage status indicator on the module for two 2-wire floating Ex-i signal circuits. Nominal voltage: 24 VDC
$358.75
Surge protection plug with integrated multi-stage status indicator on the module for two 2-wire floating signal circuits. Nominal voltage: 5 VDC
$366.25
Surge protection plug with integrated multi-stage status indicator on the module for five signal wires. For HF applications. Nominal voltage: 12 VDC
$366.25
Surge protection plug with integrated multi-stage status indicator on the module for four signal wires with common reference potential. 24 VDC nominal voltage.
$358.75
Surge protection plug with integrated multi-stage status indicator on the module for two 2-wire floating signal circuits. 24 VDC nominal voltage.
$195.00
Surge protection plug with integrated multi-stage status indicator on the module for a 2-wire floating signal circuit. 24 VDC nominal voltage.
$195.00
Surge protection plug with integrated multi-stage status indicator on the module for a 2-wire floating signal circuit. 5 VDC nominal voltage.
$197.50
Surge protection plug with integrated status indicator on the module for a 2-wire floating signal circuit. Nominal voltage: 12 V DC
$197.50
Surge protection plug with integrated status indicator on the module for two signal wires with a common reference potential. Nominal voltage: 12 V DC
$197.50
Surge protection plug with integrated status indicator on the module for a 2-wire floating signal circuit. Nominal voltage: 24 V DC
$113.75
Replacement plug for surge protective devices from the VALVETRAB SEC product range for DC power sources.
$113.75
Replacement plug for surge protective devices from the VALVETRAB SEC product range for DC power sources.
$113.75
Replacement plug for surge protective devices from the VALVETRAB SEC product range for DC power sources.
$203.75
Surge protection plug with integrated status indicator on the module for a 2-wire floating signal circuit with high nominal current. Nominal voltage: 24 VDC
$165.00
Surge protection plug with integrated status indicator on the module for a 3-wire floating signal circuit with a high nominal current. Nominal voltage: 5 VDC
$195.00
Surge protection plug with integrated multi-stage status indicator on the module, for protecting a double wire from analog and digital telecommunications interfaces (up to 16 Mbps).
$195.00
Surge protection plug with integrated multi-stage status indicator on the module for a 2-wire floating signal circuit. 12 VDC nominal voltage.
$213.75
Surge protection plug with integrated status indicator for a 3-wire Ex i signal circuit with common reference potential. For HF applications. Nominal voltage: 24 VDC
$197.50
Surge protection plug with integrated status indicator on the module for a 2-wire floating signal circuit. Nominal voltage: 48 V DC
$167.50
UL Recognized type 1 SPD and IEC type 2 surge protection plug with a varistor and thermal disconnect for use with VAL-US base elements, mechanical and visual fault warning
$113.75
Replacement plug for surge protective devices from the VALVETRAB SEC product range for DC power sources.
$130.00
Replacement plug for PV arrester combinations from the VAL-MS 1000DC-PV-... product range
$202.50
Surge protection plug with integrated multi-stage status indicator on the module for two signal wires with common reference potential. 24 VDC nominal voltage.
$210.00
Surge protection plug with integrated status indicator on the module for one 2-wire floating Ex i signal circuit. Nominal voltage: 24 VDC
$213.75
Surge protection plug with integrated status indicator for a 3-wire Ex i signal circuit with common reference potential. For HF applications. Nominal voltage: 12 VDC
$197.50
Surge protection plug with integrated status indicator on the module for two signal wires with a common reference potential. Nominal voltage: 48 V DC
$227.50
Surge protection plug with integrated status indicator on the module for three signal wires. For HF applications. Nominal voltage: 12 V DC
$216.25
Replacement plug for the PLUGTRAB PT-IQ-PTB... supply and remote signaling module
$196.25
Surge protection plug with integrated status indicator on the module for a 3-wire floating signal circuit with a high nominal current. Nominal voltage: 24 VDC
$366.25
Surge protection plug with integrated multi-stage status indicator on the module for five signal wires. For HF applications. Nominal voltage: 5 VDC
$366.25
Surge protection plug with integrated multi-stage status indicator on the module for four signal wires with common reference potential. Nominal voltage: 48 VDC
$358.75
Surge protection plug with integrated multi-stage status indicator on the module for two 2-wire floating signal circuits. Nominal voltage: 48 VDC
$202.50
Surge protection plug with integrated multi-stage status indicator on the module for three signal wires. For HF applications. Nominal voltage: 12 VDC
$202.50
Surge protection plug with integrated multi-stage status indicator on the module for one 2-wire floating Ex-i signal circuit. Nominal voltage: 24 VDC
$202.50
Surge protection plug with integrated multi-stage status indicator on the module for two signal wires with common reference potential. 48 VDC nominal voltage.
$195.00
Surge protection plug with integrated multi-stage status indicator on the module for a 2-wire floating signal circuit. 48 VDC nominal voltage.
$172.50
Replacement plug for type 3 surge protection from the TERMITRAB complete T3 product series. Nominal voltage 24 V.
$210.00
Surge protection plug with integrated status indicator for one 2-wire Ex i signal circuit with common reference potential. Nominal voltage: 24 VDC
$197.50
Surge protection plug with integrated status indicator on the module for two signal wires with a common reference potential. Nominal voltage: 24 VDC
$227.50
Surge protection plug with integrated status indicator on the module for three signal wires. For HF applications. Nominal voltage: 24 V DC
$172.50
Replacement plug for PV arrester combinations from the VAL-MS-T1/T2 600DC-PV-... product range