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

• UL 489
  
• CSA 22.2, No. 5
  
• IEC 60947-2
  
• CE
  
• KEMA
  
• CCC
  

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