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MidNite Solar MNSPD-300-DC surge protector device

Model: MNSPD-300-DC · SKU: MNSPD-300-DC

Prepared Nov 12, 2026

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Common specifications

Device type	Surge Protector Device (MNSPD)Source [2]
Bus rating	Not documented
Breaker spaces	Not documented
Voltage rating	300 VSource [1]
Surge protector type	Type 1Source [1]
Surge current rating	Not documented
Maximum circuits	Not documented
Maximum continuous operating voltage	Not documented
Voltage protection rating	Not documented
AC configuration	Not documented
Interrupt rating	Not documented
Enclosure	Type 4X (Outdoor)Source [2]
Safety listing	UL 1449Source [1]
Mounting	Not documented
Weight	0.45 kg0.99 lb convertedCalculatedSource [2]
Dimensions	88.9 D × 96.5 W × 111.8 L mm3.5 D × 3.8 W × 4.4 L inCalculatedSource [2]
Enclosure volume	0.96 L** Calculated from recorded external dimensions
Warranty term	5 yearsSource [2]

All recorded specifications

Device type	Surge Protector Device (MNSPD)Documented claim Conditions Printed as "The MidNite Solar 300V DC Surge Protector Device (MNSPD) is a Type 1 device per UL1449 rev3". Location: DESCRIPTION Printed as "The MidNite Solar 300V DC Surge Protector Device (MNSPD) is a Type 1 device per UL1449 rev3". Location: DESCRIPTION Official product page · MidNite Solar MNSPD-300-DC product page (October 9, 2026 capture) [2]
Dimensions	88.9 D × 96.5 W × 111.8 L mm3.5 D × 3.8 W × 4.4 L inCalculated4.4 x 3.8 x 3.5 in x 25.4 mm/in, rounded to 0.1 mm Conditions Printed as "4.4"L x 3.8"W x 3.5"D" in the Size column; converted from inches. The individual box is printed as 5"L x 4"W x 4"D. Location: Model table, Size column Printed as "4.4"L x 3.8"W x 3.5"D" in the Size column; converted from inches. The individual box is printed as 5"L x 4"W x 4"D. Location: Model table, Size column Official product page · MidNite Solar MNSPD-300-DC product page (October 9, 2026 capture) [2]
Enclosure	Type 4X (Outdoor)Documented claim Conditions Printed as "Environmental Rating - Type 4X (Outdoor)". Location: DESCRIPTION Printed as "Environmental Rating - Type 4X (Outdoor)". Location: DESCRIPTION Official product page · MidNite Solar MNSPD-300-DC product page (October 9, 2026 capture) [2]
Operating temperature	-40°c to +85°cDocumented claim Conditions Printed as "Operating Temperature Range -40°c to +85°c", applying to all three voltages. Location: PDF page 2 (Page 2 of 7), chart Printed as "Operating Temperature Range -40°c to +85°c", applying to all three voltages. Location: PDF page 2 (Page 2 of 7), chart Official installation manual · MidNite Solar Surge Protective Device installation manual (10-055-1 REV E, 08/27/2018) [1]
Safety listing	UL 1449Documented claim Conditions Printed as "UL Standard for Safety, UL 1449" and "CSA C22.2 No. 8-M1986" on the manual's first page; the product page prints "Type 1 device per UL1449 rev3" and "Listed by ETL for US & Canada". These are the maker's statements; no listing record was checked. Location: PDF page 1 (Page 1 of 7) Printed as "UL Standard for Safety, UL 1449" and "CSA C22.2 No. 8-M1986" on the manual's first page; the product page prints "Type 1 device per UL1449 rev3" and "Listed by ETL for US & Canada". These are the maker's statements; no listing record was checked. Location: PDF page 1 (Page 1 of 7) Official installation manual · MidNite Solar Surge Protective Device installation manual (10-055-1 REV E, 08/27/2018) [1]
Surge protector type	Type 1Documented claim Conditions Printed as "The MidNite Solar Surge Protective Device (MNSPD) is a Type 1 device"; the product page prints "a Type 1 device per UL1449 rev3". Location: PDF page 1 (Page 1 of 7) Printed as "The MidNite Solar Surge Protective Device (MNSPD) is a Type 1 device"; the product page prints "a Type 1 device per UL1449 rev3". Location: PDF page 1 (Page 1 of 7) Official installation manual · MidNite Solar Surge Protective Device installation manual (10-055-1 REV E, 08/27/2018) [1]
Voltage rating	300 VDocumented claim Conditions Printed as "0 to 300 VDC (DC model)" in the chart's Nominal Voltage row; the product page prints "The DC SPD will work well on all DC circuits up to 300 volts as well as any 120/240 VAC circuits." Location: PDF page 2 (Page 2 of 7), chart, Nominal Voltage row, MNSPD300AC and DC column Printed as "0 to 300 VDC (DC model)" in the chart's Nominal Voltage row; the product page prints "The DC SPD will work well on all DC circuits up to 300 volts as well as any 120/240 VAC circuits." Location: PDF page 2 (Page 2 of 7), chart, Nominal Voltage row, MNSPD300AC and DC column Official installation manual · MidNite Solar Surge Protective Device installation manual (10-055-1 REV E, 08/27/2018) [1]
Weight	0.45 kg0.99 lb convertedCalculated1 lb x 0.45359237 kg/lb, rounded to 0.01 kg Conditions Printed as "Ind: 1 Lb." in the Weight column (a 12-unit case: 10 lbs); converted from pounds. Location: Model table, Weight column Printed as "Ind: 1 Lb." in the Weight column (a 12-unit case: 10 lbs); converted from pounds. Location: Model table, Weight column Official product page · MidNite Solar MNSPD-300-DC product page (October 9, 2026 capture) [2]

Warranty

Warranty term	5 yearsDocumented claim Conditions Printed as "Warranty - 5 yrs." on the product page. Location: DESCRIPTION Printed as "Warranty - 5 yrs." on the product page. Location: DESCRIPTION Official product page · MidNite Solar MNSPD-300-DC product page (October 9, 2026 capture) [2]

Certificate records

No records documented.

Sources and revisions

MidNite Solar Surge Protective Device installation manual (10-055-1 REV E, 08/27/2018)Official installation manual · Revision 10-055-1 REV E · 2018-08-27 · Checked Oct 9, 2026https://www.midnitesolar.com/pdfs/SPD_Installation_Manual.pdf
MidNite Solar MNSPD-300-DC product page (October 9, 2026 capture)Official product page · Checked Oct 9, 2026https://www.midnitesolar.com/productPhoto.php?product_ID=284&productCat_ID=23&sortOrder=2&act=p