


1P Standard Circuit Breaker 40A 120/240VAC
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
1P Standard Circuit Breaker 40A 120/240VAC'Unit Mount Circuit Breaker, Circuit Breaker Type Standard, Number of Poles 1, 40 Amps, AC Voltage Rating 120 240VAC, DC Voltage Rating 48VDC, Max. AIR Rating 10kA, Phase 1, Terminal Connection Slotted Box Lug (Reversible Line and Load), Series QOU, Min. Wire Size 14 AWG, Max. Wire Size 2 AWG, Length 4. 05 In., Width 0. 75 In., Depth 2. 98 In., Standards UL Listed, CSA Certified, HACR, IEC'
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- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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★★★★★ 5
Nice quality
Seems very good quality. Will purchase again.
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Reviewed in the United States on October 18, 2025
★★★★★ 5
Roomy
Looks even better in person. More room then I expected
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Reviewed in the United States on October 31, 2025
★★★★★ 5
Nice
Great
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Tray
This is the perfect size! I received my order sooner than expected when the first one wasn't delivered.
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Reviewed in the United States on December 17, 2025
★★★★★ 1
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