Product Overview
The Eaton SPD series surge protection device is the latest generation of advanced surge protection devices certified by UL 1449 5th edition. This series of products adopts thermal protection metal oxide varistor (MOV) technology and can be integrated into various types of Eaton distribution equipment, including distribution panels, switchgear, motor control centers, medium voltage switchgear, automatic transfer switches, and busbar junction boxes. In addition, the SPD series also offers a side mounted version that can be installed outside of electrical equipment.
The SPD series covers multiple surge current capacity levels from 50kA to 400kA, supports all common voltages and configurations, and offers four functional package options. Its rich features, options, and configurations ensure that users can choose the most suitable protection unit for various electrical applications, including inlet ports, distribution cabinets, distribution panels, and terminal equipment.
Core technical features
1. Thermal protection MOV technology
The SPD series uses metal oxide varistors as the core protective component and integrates thermal protection function. When MOV generates excessive heat due to abnormal overvoltage, the thermal protection device will isolate it from the circuit to ensure equipment safety and avoid the risk of thermal runaway.
2. UL 1449 5th edition certification
As the latest UL 1449 certified product, the SPD series has undergone rigorous testing, including:
Nominal discharge current (In) test: 20kA
Voltage Protection Rating (VPR) Test
Fault mode testing
Thermal stability test
3. High short-circuit current tolerance
The SPD series has a short-circuit current rating (SCCR) of 200kA, which can withstand the maximum fault current that may occur in the power system without damage.
4. Multiple surge capacity levels
Provide 9 surge current capacity levels, including 50kA, 80kA, 100kA, 120kA, 160kA, 200kA, 250kA, 300kA, and 400kA, to meet the protection needs of different risk levels.
5. Electromagnetic interference filtering
The standard type, standard type with counter, and Power Xpert SPD all have built-in EMI/RFI filters that can provide up to 50dB noise attenuation in the frequency range of 10kHz to 100MHz, improving power quality.
6. Network security authentication
The Power Xpert SPD model has passed UL 2900-1 network security standard testing, ensuring that networked devices have the necessary network security to prevent malicious attacks.
Feature Pack Options
The SPD series offers four functional packages, which users can choose according to their application needs:
1. Basic type
Thermal protection MOV technology
Dual color protection status indicator light (for each phase and N-G mode)
Sound and light alarm with mute button
Form C relay contacts
2. Standard type
Add:
EMI/RFI filtering
Tri color protection status indicator light
Remaining protection percentage display
3. Standard with Surge Counter
Add on to the standard model:
Resettable surge counter
4. Power Xpert SPD
Add intelligent functions on the basis of the standard model:
RJ45 Ethernet port, supports LAN connection
Modbus TCP/IP and BACnet/IP protocols
Built in web page, programmable settings
Time stamped surge logs and surge classification
Real time clock, network synchronization accuracy ± 2 minutes/month (25 ° C)

Remote display options
The SPD series supports remote installation of display panels, suitable for situations where devices are installed internally but require external viewing of status.
Remote display unit selection
SPD units with directory numbers ending in "B" (see directory number configuration on page 8) are suitable for remote display applications. This type of unit includes SPD host and remote display panel, and remote display cables need to be purchased separately.
Remote display cable
Describe the standard SPD catalog number Power Xpert SPD catalog number
4-foot remote display cable SPDRDCAB04 PXSPDRDCAB04
8-foot remote display cable SPDRDCAB08 PXSPDRDCAB08
12 foot remote display cable SPDRDCAB12 PXSPDRDCAB12
Note: The units integrated into the switchgear by Eaton's factory do not require separate purchase of cables, and the factory has provided and completed the installation.
On site modification kit
For installed standard SPD units, remote installation of the display panel can be achieved through a remote display kit, which includes all required components (including cables).
Describe the standard SPD catalog number Power Xpert SPD catalog number
Remote display kit, 4-foot cable SPDRDKIT04 PXSPDRDKIT04
Remote display kit, 8-foot cable SPDRDKIT08 PXSPDRDKIT08
Remote display kit, 12 foot cable SPDRDKIT12 PXSPDRDKIT12
Performance data and voltage protection level
ANSI/UL 1449 5th edition Voltage Protection Rating (VPR)
The SPD series provides VPR data for two installation methods:
Direct busbar installation (catalog number ending in A): Only applicable to Eaton PRL1a, 2a, 3a, and 3e distribution panels
Connected through circuit breakers (catalog numbers ending in B, C, or J): suitable for switchgear, distribution panels, switchboards, motor control centers, etc