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M400J12
M400J12
Class J Fused Disconnect 600V 400A 3 Pole 1-2 Pole Configuration

Mersen’s fusible disconnect switches are listed to UL 98 and bear the CE mark conforming to IEC 60947-3. They are “service entrance” devices capable of fully rated load-break and load-make. While longterm safety, reliability, and functionality are always paramount in the design of our products, these switches are also engineered to have the smallest footprint. The modular design allows placement of the handle anywhere amongst the poles. The fuse doors cannot open when the switch is in the “ON” position, and all switches are double-break, which isolates both fuse clips from voltage during fuse replacement. The switches’ “Test” position allows actuation of the auxiliary contacts without main power. Power taps enable energizing a CPT or surge device without the need for a separate terminal block. A wide range of ergonomic handles and accessories is available.

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Specifications
Item Number M400J12
EAN UPC Code 782001462611
GTIN Sell Pack 70782001462610
Applications
  • Main disconnects
  • Short circuit protection
  • Electrical isolation
  • Overcurrent protection
  • Safety switch
Approvals Standards
  • All UL Fusible Disconnect Switches meet UL & CSA requirements
  • UL listed guide WHTY, File E191605 for UL 98 (ratings from 30A to 1200A)
  • IEC 60947-3
Brand Name Mersen
Country Of Origin FI
Features Benefits
  • Multiple Configurations
  • Power taps
  • Adjustable shaft depth
  • Fuse monitoring
  • Double break, isolating live and load side of fuse
  • Interlocked fuse doors
Max Operating Temp 40 °C
Max Storage Temp 55 °C
Min Operating Temp -5 °C
Min Storage Temp -25 °C
Product Line UL98 Fused Switch
Product Family Low-Voltage Switches
Product Group UL/CSA Switches
Product Type UL 98 Fusible
Short Circuit Current Rating SCCR 200 kA
Short Circuit Rating Standalone 200 kA
UL File Number File E191605
Connection Terminal Material Silver-Plated Copper
Connection Terminal Type Blade
Installation Mounting Direct Screw Mount
Number Of Poles 3-Pole
Product Height 6.93 in
Product Length 9.06 in
Product Weight 16.06 lb
Product Width 10.4 in
Rated Insulation Voltage 1000 V
Sell Pack Description Box
Sell Pack Height 10.63 in
Sell Pack Length 8.11 in
Sell Pack Width 9.45 in
Sell Pack Quantity 1 Each
Sell Pack Weight 16.86 lb
Ampere Rating 400 A
Contact Type Double Break
Fuse Type Class Class J
Item Description SWITCH.FUS 400A J 1+2 POS.
Max Fuse Rating 400 A
Max Horsepower Rating Fla 3-Phase: 240V 125HP, 480V 250HP, 600V 350HP
Minimum Quantity Per Order 1
Order Multiple 1
Rated Voltage AC UL 600 V
Rated Voltage DC UL 250 V
Short Description Class J Fused Disconnect 600V 400A 3 Pole 1-2 Pole Configuration
Test Feature 0
Short Circuit Rating Class J 200 kA
Wire Connections Terminal
Documents
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