Molded Case Circuit Breakers

Catalogs > Industrial Controls Catalog > Motor Control, IEC > Molded Case Circuit Breakers > Bulletin 140U M-Frame

Bulletin 140U M-Frame

Product Selection — 800 A, M-Frame Accessories — 800 A, M-Frame Approximate Dimensions — 800 A, M-Frame
Product Selection — 800 A, M-Frame

Click to enlarge - 140U-39-6



Note: Terminal box lugs must be ordered separately. See

Breaker Frames

Rated Current In [A] Breaking Capacity (50 Hz) Icu /Ics [kA] Interrupting Rating (60 Hz) [kA] Cat. No.
220…240V 380…415V 525V 690V 240V 480V 600V
800 65 65 50 50 50 25 20 10 65 50 25 140U-M5X3
100 100 70 70 70 50 25 13 100 65 35 140U-M6X3
  

Trip Units and Rating Plugs

Thermal-Magnetic
Rated Current In [A] Adjustment Range [A] Cat. No.
Thermal Trip
Ir = In
Magnetic Trip
Im = 5…10 x In
300 300 1500…3000 140U-MTD3-D30
350 350 1750…3500 140U-MTD3-D35
400 400 2000…4000 140U-MTD3-D40
450 450 2250…4500 140U-MTD3-D45
500 500 2500…5000 140U-MTD3-D50
600 600 3000…6000 140U-MTD3-D60
700 700 3500…7000 140U-MTD3-D70
800 800 4000…8000 140U-MTD3-D80

Electronic
Rated Current In [A] Adjustment Range [A] Protection Type Cat. No.
Thermal Trip
Ir = 0.5…1.0 x In
Magnetic Trip
Im = 2…8 x In
800A 400…800⋆  800…6400 400…800 A LS Electronic Trip Unit 140U-MTL3-D80
400…800 A LSI Electronic Trip Unit 140U-MTH3-D80
400…800 A LSG Electronic Trip Unit 140U-MTG3-D80
400…800 A LSIG Electronic Trip Unit 140U-MTI3-D80
  
Select proper rating plug to cover thermal trip requirement.

Rating Plugs
Thermal Trip
In [A]
Cat. No. Thermal Trip
In [A]
Cat. No.
400 140U-MRP3-D40 700 140U-MRP3-D70
500 140U-MRP3-D50 800 140U-MRP3-D80
600 140U-MRP3-D60
  

Assembled Circuit Breakers, Thermal-Magnetic Trip Units

Rated Current In [A] Thermal Trip
Ir = In
Breaking Capacity/Interrupting Rating [kA]‡  Cat. No. Breaking Capacity/Interrupting Rating [kA]‡  Cat. No.
400V 480V 400V 480V
300 300 50 50 140U-M5D3-D30 70 65 140U-M6D3-D30
350 350 50 50 140U-M5D3-D35 70 65 140U-M6D3-D35
400 400 50 50 140U-M5D3-D40 70 65 140U-M6D3-D40
450 450 50 50 140U-M5D3-D45 70 65 140U-M6D3-D45
500 500 50 50 140U-M5D3-D50 70 65 140U-M6D3-D50
600 600 50 50 140U-M5D3-D60 70 65 140U-M6D3-D60
700 700 50 50 140U-M5D3-D70 70 65 140U-M6D3-D70
800 800 50 50 140U-M5D3-D80 70 65 140U-M6D3-D80
  
‡ Interrupting ratings shown are for 400V and 480V, respectively. The complete range of ratings can be found in the frame rating table on Breaker Frames

Assembled Circuit Breakers, Electronic Trip Units

Rated Current In [A] Thermal Trip
Ir = 0.5…1.0 x In
Protection Type Breaking Capacity/
Interrupting Rating [kA]‡ 
Cat. No. Breaking Capacity/
Interrupting Rating [kA]‡ 
Cat. No.
400V 480V 400V 480V
800 400…800⋆  LS 50 50 140U-M5L3-D80 70 65 140U-M6L3-D80
LSI 50 50 140U-M5H3-D80 70 65 140U-M6H3-D80
LSG 50 50 140U-M5G3-D80 70 65 140U-M6G3-D80
  
⋆ Select proper rating plug to cover thermal trip requirement.
‡ Interrupting ratings shown are for 400V and 480V, respectively. The complete range of ratings can be found in the frame rating table on Breaker Frames.

Molded Case Switch — UL 489

Rated Current In [A] Magnetic Trip [A]
Im = 10 x In
Breaking Capacity (50 Hz) Icu /Ics [kA] Interrupting Rating (60 Hz) [kA] Cat. No.
220…240V 380…415V 500V 690V 240V 480V 600V
800 8000 100 100 70 70 70 50 25 13 100 65 35 140U-M6S3-D80