Surge suppressors, transient voltage, are used to protect against temporary excess voltage and/or current in an electrical circuit that has been disturbed. Surge suppressors, transient voltage can be AC single phase, AC three phase, or DC dataline.  AC single-phase units are configured to suppress surges, spike, transients, etc., on single-phase AC power lines.  AC three phase units are configured to suppress surges, spike, transients, etc., on three phase AC power lines.  DC or dataline units are configured to suppress surges, spike, transients, etc., on DC data, phone, and signal lines.  Surge suppressors, transient voltage can also be power conditioners.  A power conditioner is a unit with full power conditioning capabilities, including functions such as voltage regulation in combination, output isolation, noise and spike attenuation, harmonic filtering, etc., to ensure the quality and consistency of power to sensitive medical, laboratory, computer, and other high technology equipment.

Outlets or connections that are available for surge suppressors, transient voltage include electrical outlets (AC), RJ11 / RJ13 / RJ14 phone jacks, RJ41 / RJ45 / RJ48 data jacks, and coaxial cable connectors.  Mounting choices for surge suppressors, transient voltage include wall, panel or backboard mount, DIN rail, rack mount hard-wired or device mount, in-line or integrally attached, plug-in module, and PCB mount.  A wall panel or backboard mount is a stand-alone panel, where surge protection components are mounted within enclosure. Usually components are module based for easy maintenance. Rail mount suppressors are meant to mount on a DIN rail. Rack mounted units mount in or on a rack.  A hard-wired or device mount suppressor is physically mounted on or within the device to be protected from the surge.  An in-line unit is threaded or is meant to integrally attached to conduits, cabling etc.  A plug-in module is meant to plug into an existing system or surge protection device.  PCB mounted suppressors need to be mounted on a PCB (printed circuit board), to provide the device with surge suppression.

Surge suppressors, transient voltage, are used to protect against temporary excess voltage and/or current in an electrical circuit that has been disturbed. Surge suppressors, transient voltage can be AC single phase, AC three phase, or DC dataline.  AC single-phase units are configured to suppress surges, spike, transients, etc., on single-phase AC power lines.  AC three phase units are configured to suppress surges, spike, transients, etc., on three phase AC power lines.  DC or dataline units are configured to suppress surges, spike, transients, etc., on DC data, phone, and signal lines.  Surge suppressors, transient voltage can also be power conditioners.  A power conditioner is a unit with full power conditioning capabilities, including functions such as voltage regulation in combination, output isolation, noise and spike attenuation, harmonic filtering, etc., to ensure the quality and consistency of power to sensitive medical, laboratory, computer, and other high technology equipment.

Outlets or connections that are available for surge suppressors, transient voltage include electrical outlets (AC), RJ11 / RJ13 / RJ14 phone jacks, RJ41 / RJ45 / RJ48 data jacks, and coaxial cable connectors.  Mounting choices for surge suppressors, transient voltage include wall, panel or backboard mount, DIN rail, rack mount hard-wired or device mount, in-line or integrally attached, plug-in module, and PCB mount.  A wall panel or backboard mount is a stand-alone panel, where surge protection components are mounted within enclosure. Usually components are module based for easy maintenance. Rail mount suppressors are meant to mount on a DIN rail. Rack mounted units mount in or on a rack.  A hard-wired or device mount suppressor is physically mounted on or within the device to be protected from the surge.  An in-line unit is threaded or is meant to integrally attached to conduits, cabling etc.  A plug-in module is meant to plug into an existing system or surge protection device.  PCB mounted suppressors need to be mounted on a PCB (printed circuit board), to provide the device with surge suppression.

Important electrical specifications to consider when searching for surge suppressors, transient voltage include maximum surge current, AC energy absorption, maximum AC power, DC energy absorption, and maximum DC power.  The maximum surge current is the maximum current allowed for a single impulse waveform with continuous voltage applied. This level is used to indicate the protection capacity of a particular surge suppressor design, and when specifying a suppressor for a given application. For example, in a high exposure application with very large transients present from lightning, a higher-level surge current capacity would be required.  AC and DC energy absorption is the measurement of a surge protective device's ability to absorb heat energy created by transient surges. Note that the Joule rating is not a part of IEEE or UL Standards.  Maximum AC and DC power is the maximum AC and DC power respectively that the unit can handle.

Common features for surge suppressors, transient voltage include hospital or medical grade, self-diagnostics, status indicators or LEDs, resettable circuit breakers, audible alarms, sine wave tracking, and surge counters.  An important environmental parameter to consider when selecting surge suppressors, transient voltage is the operating temperature.