Mersen Disconnects

Mersen disconnects are designed to provide safe and reliable power isolation in industrial and commercial electrical systems. These disconnect switches allow equipment and circuits to be de-energized for maintenance, servicing, and emergency shutdowns, helping protect both personnel and equipment. Mersen is well known for circuit protection solutions, and its disconnect products are built to support dependable switching and overcurrent protection in demanding applications.

Mersen disconnect switches are commonly available in fused configurations, combining a disconnect switch and fuse protection in one compact solution. This design allows users to isolate electrical circuits while also protecting against overloads and short circuits. Mersen disconnects are often used in control panels, machinery, HVAC systems, and power distribution equipment where safe circuit isolation and reliable protection are essential. These disconnects are built for durability and performance, with designs suited for a range of voltage and amperage requirements in industrial environments.

Many Mersen disconnect solutions support lockout and tagout procedures, helping facilities improve electrical safety during maintenance. Their rugged construction and dependable switching performance make them a practical choice for systems that require frequent service access and long-term reliability. Mersen disconnects are widely used in industries such as manufacturing, energy, transportation, HVAC, and industrial automation. They are commonly installed near motors, drives, control panels, and other electrical equipment to provide a local means of disconnecting power.

Found 57 items
Normally In Stock
Mersen M100J03 UL 98 Fusible Switch 600VAC Class J 100A 3-Pole Configuration: 0-3
Free U.S Ground shipping
$1892.24
$1576.87
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Mersen M100J12 UL 98 Fusible Switch 600VAC Class J 100A 3-Pole Configuration: 1-2
Free U.S Ground shipping
$2102.50
$1752.08
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Mersen M100J30 UL 98 Fusible Switch 600VAC Class J 100A 3-Pole Configuration: 3-0
Free U.S Ground shipping
$2102.50
$1752.08
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Mersen M1200L12 UL 98 Fusible Switch 600VAC Class L 1200A 3-Pole Configuration: 1-2
Free U.S Ground shipping
$30850.04
$25708.37
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Mersen M1200L30 UL 98 Fusible Switch 600VAC Class L 1200A 3-Pole Configuration: 3-0
Free U.S Ground shipping
$32392.55
$26993.79
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Mersen M1200U30 UL 98 Non-Fusible Switch 600VAC 1200A 3-Pole Configuration: 3-0
Free U.S Ground shipping
$28834.06
$24028.38
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Mersen M163DM UL508 Switch 600VAC Non-Fused 16A 3-Pole Panel Mount
Free U.S Ground shipping
$191.40
$159.50
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Mersen M200J12 UL 98 Fusible Switch 600VAC Class J 200A 3-Pole Configuration: 1-2
Free U.S Ground shipping
$4279.34
$3566.12
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Mersen M200J30 UL 98 Fusible Switch 600VAC Class J 200A 3-Pole Configuration: 3-0
Free U.S Ground shipping
$4279.34
$3566.12
Normally In Stock
Mersen M200U03 UL 98 Non-Fusible Switch 600VAC 200A 3-Pole Configuration: 0-3
Free U.S Ground shipping
$2511.54
$2092.95
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Mersen M200U12 UL 98 Non-Fusible Switch 600VAC 200A 3-Pole Configuration: 1-2
Free U.S Ground shipping
$2197.63
$1831.36
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Mersen M200U30 UL 98 Non-Fusible Switch 600VAC 200A 3-Pole Configuration: 3-0
Free U.S Ground shipping
$2009.23
$1674.36
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Mersen M253DM UL508 Switch 600VAC Non-Fused 25A 3-Pole Panel Mount
Free U.S Ground shipping
$224.26
$186.88
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Mersen M30CC12 UL 98 Fusible Switch 600VAC Class CC 30A 3-Pole Configuration: 1-2
Free U.S Ground shipping
$990.66
$825.55
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Mersen M30J12 UL 98 Fusible Switch 600VAC Class J 30A 3-Pole Configuration: 1-2
Free U.S Ground shipping
$962.41
$802.01
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Mersen M403DM UL508 Switch 600VAC Non-Fused 40A 3-Pole Panel Mount
Free U.S Ground shipping
$236.44
$197.03
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Mersen M400J12 UL 98 Fusible Switch 600VAC Class J 400A 3-Pole Configuration: 1-2
Free U.S Ground shipping
$6013.96
$5011.63
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Mersen M400J30 UL 98 Fusible Switch 600VAC Class J 400A 3-Pole Configuration: 3-0
Free U.S Ground shipping
$6013.96
$5011.63
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Mersen M400J40 UL 98 Fusible Switch 600VAC Class J 400A 3-Pole Configuration: -0
Free U.S Ground shipping
$10712.36
$8926.97
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Mersen M400U03 UL 98 Non-Fusible Switch 600VAC 400A 3-Pole Configuration: 0-3
Free U.S Ground shipping
$4853.17
$4044.31
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Mersen M400U12 UL 98 Non-Fusible Switch 600VAC 400A 3-Pole Configuration: 1-2
Free U.S Ground shipping
$4567.69
$3806.41
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Mersen M400U30 UL 98 Non-Fusible Switch 600VAC 400A 3-Pole Configuration: 3-0
Free U.S Ground shipping
$4567.69
$3806.41
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Mersen M60J03 UL 98 Fusible Switch 600VAC Class J 60A 3-Pole Configuration: 0-3
Free U.S Ground shipping
$1385.08
$1154.23
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Mersen M60J12 UL 98 Fusible Switch 600VAC Class J 60A 3-Pole Configuration: 1-2
Free U.S Ground shipping
$1385.08
$1154.23
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Mersen M60J30 UL 98 Fusible Switch 600VAC Class J 60A 3-Pole Configuration: 3-0
Free U.S Ground shipping
$1385.08
$1154.23
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Mersen M600J30 UL 98 Fusible Switch 600VAC Class J 600A 3-Pole Configuration: 3-0
Free U.S Ground shipping
$12614.89
$10512.41
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Mersen M600U12 UL 98 Non-Fusible Switch 600VAC 600A 3-Pole Configuration: 1-2
Free U.S Ground shipping
$8096.71
$6747.26
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Mersen M600U30 UL 98 Non-Fusible Switch 600VAC 600A 3-Pole Configuration: 3-0
Free U.S Ground shipping
$7620.43
$6350.36
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Mersen M633 UL508 Switch 600VAC Non-Fused 63A 3-Pole Direct Screw Mount
Free U.S Ground shipping
$297.13
$247.61
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Mersen M803 UL508 Switch 600VAC Non-Fused 80A 3-Pole Direct Screw Mount
Free U.S Ground shipping
$334.32
$278.60
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Mersen M800L12 UL 98 Fusible Switch 600VAC Class L 800A 3-Pole Configuration: 1-2
Free U.S Ground shipping
$17935.48
$14946.23
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Mersen M800L30 UL 98 Fusible Switch 600VAC Class L 800A 3-Pole Configuration: 3-0
Free U.S Ground shipping
$16047.53
$13372.94
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Mersen M800U12 UL 98 Non-Fusible Switch 600VAC 800A 3-Pole Configuration: 1-2
Free U.S Ground shipping
$18696.37
$15580.31
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Mersen M800U30 UL 98 Non-Fusible Switch 600VAC 800A 3-Pole Configuration: 3-0
Free U.S Ground shipping
$18204.37
$15170.31
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Mersen M100J22 UL 98 Fusible Switch 600VAC Class J 100A 4-Pole Configuration: 2-2
Free U.S Ground shipping
$3153.73
$2628.11
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Mersen M100J22N UL 98 Fusible Switch 600VAC Class J 100A 4-Pole Configuration: 2-2-N
Free U.S Ground shipping
$3153.73
$2628.11
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Mersen M100J40 UL 98 Fusible Switch 600VAC Class J 100A 4-Pole Configuration: 4-0
Free U.S Ground shipping
$3153.73
$2628.11
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Mersen M100J40N UL 98 Fusible Switch 600VAC Class J 100A 4-Pole Configuration: 4-0-N
Free U.S Ground shipping
$3153.73
$2628.11
Normally In Stock
Mersen M1200L40 UL 98 Fusible Switch 600VAC Class L 1200A 4-Pole Configuration: 4-0
Free U.S Ground shipping
$47357.52
$39464.60
Normally In Stock
Mersen M200J40 UL 98 Fusible Switch 600VAC Class J 200A 4-Pole Configuration: 4-0
Free U.S Ground shipping
$6419.03
$5349.19
Normally In Stock
Mersen M30CC22 UL 98 Fusible Switch 600VAC Class CC 30A 4-Pole Configuration: 2-2
Free U.S Ground shipping
$1613.41
$1344.51

FAQs

What are Mersen disconnects used for?

Mersen disconnects are used to safely isolate electrical power in industrial and commercial systems for maintenance, servicing, emergency shutdowns, and equipment protection.

What types of Mersen disconnect switches are available?

Mersen disconnect switches are commonly available in fused configurations designed to provide both safe power isolation and overcurrent protection in one device.

What is the difference between fused and non-fused disconnects?

Fused disconnects include integrated fuse protection for overloads and short circuits, while non-fused disconnects are used only to open and isolate the circuit.

Where are Mersen disconnects commonly used?

Mersen disconnects are commonly used in control panels, HVAC equipment, machinery, industrial automation systems, and power distribution applications.

Why are Mersen disconnects important in electrical systems?

Mersen disconnects improve safety by allowing circuits to be safely de-energized during maintenance while also helping protect equipment and support reliable system operation.

Why Buy Mersen Disconnects from RSP Supply

RSP Supply offers Mersen disconnect switches with fast shipping and strong inventory availability, helping you safely isolate power and protect electrical systems without delays. Our team provides expert guidance on voltage ratings, fuse selection, and application requirements, ensuring you choose the right disconnect for reliable and compliant operation.