Type 3 Surge Protection Device SPD

Type 3 Surge Protector Manufacturer

Monobloc DIN-rail AC Type 3 SPD

We are a trusted surge protection devices manufacturer in China specializing in manufacturing high-quality SPDs.

With a thorough understanding of standards and regulations, LSP manufactures millions of surge protection devices (SPDs) every year.

Our teams bring surge protection devices (SPDs) with our unique client-focused service & quality to the closest possible to the market demand.

Type 3 Surge Protection Device SPD

DIN-rail mounted Class D SPD to protect sensitive equipment - TLP series

Arresters tested and found Type 3 are intended to be installed near sensitive equipment, to protect sensitive equipment for 24V 48V 60V 120V 230V, in coordination with Type 2 arrester installation head.

TLP-30

TLP-60

TLP-75

TLP-150

TLP-255

3D Rotating Video - Type 3 Surge Protection Device SPD

Type 3 Surge Protection Device SPD

DIN-rail mounted Class III surge arrester to protect sensitive equipment - TLP series

The monobloc two-pole surge arrester features energy coordination with other arresters in the LSP product family and includes an operating state/fault indication through a green/red indicator flag visible in the inspection window. It has a 2-port configuration for series mounting and offers optional remote signaling capabilities.

Specification:

Nominal voltage U_n: 24V 48V 60V 120V 230V

Max. continuous operating voltage U_c: 30V 60V 75V 150V 255V

Open-circuit voltage (1.2/50 μs) U_oc = 2 kV @ Type 3

Nominal discharge current (8/20 μs) = 1 kA @ Type 2

Load current I_L = 25 A

Type 3 / Class III / Class D

PDF Downloads:

Datasheet

Installation Instructions

Type 3 Surge Protection Device Waveform

1.2/50 µs Waveform (Type 3 SPDs): Characterized by an extremely fast rise time of 1.2 microseconds and a brief duration of 50 microseconds, this waveform is utilized in defining the ratings of SPDs designed for safeguarding signal and data lines.

U_oc 1.2/50 µs Waveform of Type 3 Surge Protective Device

Type 3 surge Protector Wiring Diagram & Installation

DIN-rail mounted Type 3 surge protector to protect sensitive equipment - TLP series

AC Type 3 surge protection device SPD TLP series is generally installed in sub-distribution or machine control cabinets.

These DIN-Rail AC Type 3 surge protection device SPD TLP series are rated for indoor use or fixed into a waterproof box for outdoor use.

Wiring Diagram:

PDF Downloads:

Wiring Diagram

Wiring Diagram for Remote Signaling Terminals on a Type 3 Surge Protective Device (SPD)

The wiring diagram for remote signaling terminals on a Type 3 surge protection device (SPD) typically involves connecting the Common terminal to the signal device’s ground, the Normally Open terminal to the alarm input to indicate faults or alarms, and optionally using the Normally Closed terminal to indicate normal operation.

Wiring Diagram for Green Light on a TLP-255

Wiring Diagram for Red Light on a TLP-255

Type 3 Surge Protection Device SPD Price

Reliable Type 3 surge protection device SPD is designed to meet the protection needs of installations against lightning and surges. Get Type 3 SPD price now!

What is a Type 3 Surge Protector

What is surge protective device type 3

Type 3 surge protector, or Class III surge protection device, is installed at the point of use, near or within significant or sensitive individual devices, providing accurate and localized surge suppression against low-energy surges that is relatively minor but may enough to damage specific equipment as well.

Type 3 surge protective device (SPD), classified as Class D, specializes in handling the smallest surges from switching transients within the building’s electrical system. Operating with an energy handling capacity of U_oc (1.2/50 µs) 6kV to 20kV.

Unlike Type 1 surge protection device and Type 2 surge protection device, which are used to protect the entire electrical system or circuits, Type 3 protectors are point-of-use devices, providing localized protection to individual appliances or equipment. They are usually installed at the end of a power circuit, close to the equipment needing protection.

The Type 3 surge protector includes several models such as the TLP-30, TLP-60, TLP-75, TLP-150, and TLP-255.

Where Can a Type 3 Surge Protective Device Be Installed?

Where are Type 3 SPDs allowed to be installed?

A Type 3 Surge Protective Device (SPD) is typically installed at the point of use, meaning it is positioned near or directly at the equipment that needs protection from electrical surges. Below are the most common installation locations:

1. Type 3 surge protective devices are permitted to be installed - Electrical Panels or Distribution Boards

Although Type 1 and Type 2 SPDs are typically installed at the main electrical panel to protect the entire electrical system, Type 3 SPDs can be installed inside electrical distribution boards closer to the final point of use. This is useful when a specific circuit or zone requires surge protection.

Usage: Critical circuits in commercial or industrial setups, like those powering sensitive machinery or essential systems.

2. Type 3 surge protective devices are permitted to be installed - Equipment Enclosures or Control Panels

For industrial or specialized environments, Type 3 SPDs can be installed inside equipment enclosures or control panels. These panels may house multiple devices that need surge protection but don’t require the same level of protection as the entire electrical system.

Usage: Industrial machines, HVAC systems, automated equipment, or other control systems.

3. Type 3 surge protective devices are permitted to be installed - on Power Cords of Sensitive Equipment

Another common installation method is incorporating the SPD directly into the power cord of the device. This is often seen in specialized surge-protecting power strips or in equipment like printers, servers, or routers, where built-in surge protection can directly guard against surges that affect these devices.

Usage: Electronics that require consistent and specific surge protection, such as medical equipment, servers, networking hardware.

Best Type 3 Surge Protector

LSP, as a professional Surge Protector SPD manufacturer, strives to create the best Type 3 Surge Protectors. Below are three reasons why you should choose LSP’s Type 3 Surge Protector SPD.

1. Open circuit voltage (1.2/50 μs)

Thanks to select high-quality components and parts used for Type 3 Surge Protector SPD, making the TLP series the best Type 3 Surge Protector SPD.

2. Residual Voltage Level (U_p)

Residual voltage is the peak voltage allowed by a surge protector during normal operation. The lower the residual voltage, the better the protection effect.

The residual voltage level of Type 3 Surge Protector SPD is usually higher, but thanks to prime zinc oxide varistor / GDT combination, TLP series maintain a lower residual voltage level (U_p < 1500V) under high current conditions. That’s TLP sereis are the best Type 3 Surge Protector SPD.

3. Response Time

The SPD should be able to respond within nanoseconds, eliminating transient overvoltages as quickly as possible.

Response time [1-2] t_A ≤ 25ns.

Response time [1/2-PE] t_A ≤ 100ns.

How to Test a Type 3 Surge Protector

Qualified SPDs need to pass multiple tests to be considered qualified. These include short-circuit current characteristic tests, action load tests, determining limiting voltage tests, TOV tests caused by low-voltage system faults, and other test experiments.

1. Short-circuit current characteristic test

Test purpose: Check the performance of the internal connections of the SPD so that it can withstand short-circuit currents in case of a fault. If external disconnectors and overcurrent protectors are specified by the manufacturer, they should be tested together with the SPD to ensure that there is no burning, melting or charring of materials when short-circuit currents flow through them to prevent fires, explosions or arcing.

2. Operating duty test

Test purpose: The limiting voltage test only considers whether the SPD can withstand lightning wave invasions under static conditions and protect downstream equipment. When an SPD is struck by lightning, it should be operating online with continuous line voltages at both ends. This not only assesses the ability of the SPD to withstand impacts but also its ability to interrupt power frequency residual currents. Failure for external disconnectors declared by manufacturers to extinguish power frequency residual currents promptly will cause continued ignition in an SPD.

3. Determining limiting voltage test

Test purpose: The main function of an SPD is to release large currents and limit overvoltages. The voltage protection level is an important parameter for an SPD; if this level U is set too high, it may fail to protect downstream electronic devices while being positively correlated with the startup voltage of the device itself.

4. TOV test caused by low-voltage system faults

Test purpose: When a low-voltage distribution system experiences switch operations or faults (such as sudden unloading or single-phase faults), iron-magnetic resonance effects or harmonics may generate prolonged power-frequency overvoltages on an SPD known as temporary overvoltages (TOVs). This test aims to evaluate whether an SPD can withstand these TOVs without causing harm or failing in a hazardous manner due to low-voltage system faults.

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Type 2 Surge Protective Device SLP40-275/3S+1

Reliability in surge protection!

LSP’s reliable surge protection devices (SPDs) are designed to meet the protection needs of installations against lightning and surges. Contact our Experts!

Type 3 Surge Protection

Type 3 Surge Protector Manufacturer

Monobloc DIN-rail AC Type 3 SPD

Type 3 Surge Protection Device SPD

DIN-rail mounted Class D SPD to protect sensitive equipment - TLP series

3D Rotating Video - Type 3 Surge Protection Device SPD

Type 3 Surge Protection Device SPD

DIN-rail mounted Class III surge arrester to protect sensitive equipment - TLP series

Specification:

PDF Downloads:

Datasheet

Installation Instructions

Type 3 Surge Protection Device Waveform

Type 3 surge Protector Wiring Diagram & Installation

DIN-rail mounted Type 3 surge protector to protect sensitive equipment - TLP series

Wiring Diagram:

PDF Downloads:

Wiring Diagram

Wiring Diagram for Remote Signaling Terminals on a Type 3 Surge Protective Device (SPD)

Type 3 Surge Protection Device SPD Price

What is a Type 3 Surge Protector

Where Can a Type 3 Surge Protective Device Be Installed?

1. Type 3 surge protective devices are permitted to be installed - Electrical Panels or Distribution Boards

2. Type 3 surge protective devices are permitted to be installed - Equipment Enclosures or Control Panels

3. Type 3 surge protective devices are permitted to be installed - on Power Cords of Sensitive Equipment

Best Type 3 Surge Protector

How to Test a Type 3 Surge Protector

Related Products

Reliability in surge protection!

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