Eaton Bussmann 170M3742 125A 1250V AC aR High-Speed Fuse
● Contact for AvailabilityEaton Bussmann 170M3742 125A 1250V AC aR high-speed square-body fuse for semiconductor and power-electronics protection.
Rated Current125A
Rated Voltage1250V AC
Breaking Capacity100kA
PackageSize 1*
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Part Number170M3742BrandEaton BussmannRequested Qty100
Eaton Bussmann 170M3742 is a 125A, 1250V AC, aR high-speed square-body fuse for semiconductor and power-electronics protection. The Size 1* construction uses US Style Bolted Tag termination with FKE/115 Type K indicator. Interrupt rating is 100kA. Pre-arcing I²t is 1450 A²s and clearing I²t is 11500 A²s at 1250V AC. Suitable for converters, rectifiers, drives and related power-electronics protection; verify final coordination against Eaton’s official time-current data.
Technical Specifications
- Part Number
- 170M3742
- Manufacturer Part Number
- 170M3742
- Series
- 170M
- Current Rating
- 125A
- Voltage Rating
- 1250V AC
- AC / DC
- AC
- Breaking Capacity
- 100kA
- I²t
- Pre-arcing 1450 A²s; clearing 11500 A²s at 1250V AC
- Pre-arcing I²t
- 1450 A²s
- Total I²t
- 11500
- Package / Dimensions
- Size 1*
- Mounting
- Bolted Tag
- Application
- Power Electronics
- Standard
- IEC 60269-4
- Terminal Type
- US Style Bolted Tag
- Fuse Speed
- Very Fast Acting
- Utilization Class
- aR
- Approvals
- CE · IEC Rated
- Certifications
- CE · IEC Rated
- Manufacturer
- Eaton Bussmann
- Rated current
- 125A
- Rated voltage
- 1250V AC
- Utilization class
- aR
- Fuse size
- Size 1*
- Breaking capacity
- 100kA
- Terminal / connection
- US Style Bolted Tag
- Variant
- FKE/115 Type K indicator
- Clearing I²t
- 11500 A²s (1250V AC)
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