Midnite Solar 640VDC 480VAC Surge Protector

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Quick Overview

  • Number of Poles: 2.0
  • Mounting: Fits in 1/2" conduit knock-out
  • Max AC Voltage: 485.0
  • Max DC Voltage: 600.0
  • Max Surge Rating: false
  • Midnite Solar 640VDC 480VAC Surge Protector

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    The MidNite Solar Surge Protective Device (MNSPD) is a Type 2 device, designed for indoor and outdoor applications. Engineered for both AC and DC electric systems, it protects both transformer and transformer-less inverters without interfering with the GFP protection circuit, it provides protection to service panels, load centers or where the SPD is directly connected to the electronic device requiring protection. Maximum protection will only be achieved if the SPD is properly installed.

    The MidNite Solar SPD is offered in three different voltages to maximize the required protection level. Protection is achieved by reducing the clamping voltage to a safe voltage that your system can sustain without damaging any electronics in the system. By using the chart on page 2 select the SPD’s that provide the protection your system requires.

    The MidNite Solar SPD voltage rating should be chosen according to the nominal voltage of the system. Do not install an SPD with Maximum Continuous Operating Voltage (MCOV) below the nominal voltage of the system; this will deteriorate the SPD and making it unavailable when you most need it.

  • The MidNite Solar 300V AC Surge Protector Device (MNSPD) is a Type 2 device per UL1449 rev3 and has an outdoor rating of 4X for outdoor use.
  • Protection for 120 VAC and 120/240 VAC circuits.
  • Listed by ETL for US & Canada.


    Manufacturer Part Number MNSPD-600
    Number of Poles 2.0
    Mounting Fits in 1/2" conduit knock-out
    Max AC Voltage 485.0
    Max DC Voltage 600.0
    Type electricalDistributionSku
    Max Surge Rating false
    Length 4.625
    Width 3.5
    Height 3.375
    Weight 0.7  LB
    Volume 54.0  CIN
    Nominal Voltage 0 to 485 VAC 0 to 600 VDC
    MCOV VRMS @1mA 780V (702-858)
    ClampV @ 100A Current 8/20µs 1290V
    I peak (8/20µs) (Current) 100kA (Full Device) 50kA (Each Section)
    Energy Absorption 4320 J (Full Device) 2160 J (Each Section)
    Suggested Placement 316V/480 VAC circuits Grid tie PV combiners Grid tie inverter input Non-Isolated Inverters

    SPD115+300 LED indicators when voltage is present between L1+Ground and L2+Ground SPD600 LED Indicators when voltage is present between L1+L2

    Operating Temperature Range -40°c to +85°c
    Nominal Discharge Current INA 20kA
    Thermal Disconnector Internal

    Internal Fuse

    Response time <1micro sec.


    Surge Current Rating per Phase 57kA
    Short Circuit Current Rating 115kA
    T-MOVs 8
    Fusing Individually fused MOVs
    Thermal Fusing Yes
    Overcurrent Fusing Yes
    Operating Frequency 0 to 60 Hz
    Diagnostics Blue status LED, one per leg

    Mechanical Description

    Enclosure Polycarbonate UL94V-0
    NEMA Rating NEMA Type 4X
    Connection Method #12 AWG
    Mounting Method 1/2” Conduit Knockout
    Operating Altitude Sea Level – 12,000’ (3,658 Meters)
    Storage Temp -40o F to +185o F (-40o C to +85o C)
    Operating Temp -40o F to +185o F (-40o C to +85o C)
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