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-KEUR
  

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]T		Cat. No.	Breaking Capacity/Interrupting Rating [kA]T		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
T Full ratings are found in the breaker frames 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]T		Cat. No.	Breaking Capacity/ Interrupting Rating [kA]T		Cat. No.
			400V	480V		400V	480V
800	200…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.
T Full ratings are found in the breaker frames 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