Eaton TMF400M450 British Standard Fuse - gM, BS88
Part Number: TMF400M450
Quick Summary
TMF400M450 is a Eaton Bussmann series low voltage British standard fuse designed to protect industrial electrical feeders and distribution panels. The main challenge engineers face is finding fuses that meet UK BS 88 requirements while delivering reliable interruption and predictable clearing. This device offers a 450 A rating, with voltage ratings of AC 660 V and DC 460 V, in a compact 60 x 60 x 137 mm form factor. It aligns with BS 88 gM fuse types and is supported by Eaton’s Red Spot range documentation. By standardizing on this family, procurement reduces SKU proliferation, while service teams benefit from consistent fault-clearing behavior and straightforward replacement intervals.
Product Information
Extended Description
TMF400M450 Eaton: Eaton Bussmann series low voltage british standard fuse, 450 A, AC 660 V, DC 460 V, V88/B4, 60 x 137 mm, gM
Product Name
Eaton Bussmann series low voltage british standard fuse
Catalog Number
TMF400M450
UPC
051712392983
EAN
5996516026625
Product Length/Depth
137 mm
Product Height
60 mm
Product Width
60 mm
Product Weight
688 g
Warranty
Not Applicable
Compliances
Contact Manufacturer
CA134002EN
CA134002EN
CA134002EN
CE Redspot fuse-links
CE Redspot fuse-links
Eaton Bussmann - Red Spot fuse links
10078 Red spot centre bolted fuses:TB, TBC, TC, TF, TKF, TKM, TMF, TM, TMT, TTM, TLM, TT, TLU,TXU fuses
450 A current rating enables selective protection of high-current feeders, reducing nuisance trips and preserving downstream equipment in motor drives and distribution panels. This translates to higher uptime in packaging lines and process systems, with clear fault signals for maintenance teams. In practice, engineers specify TMF400M450 for British standard compliant installations in new builds or panel refurbishments in UK factories. The device also supports AC ratings up to 660 V and DC ratings up to 460 V, ensuring compatibility with mixed-supply environments common in industrial automation, which lowers the need for multiple fuse types in a single facility. The compact 60 x 60 x 137 mm footprint simplifies panel layouts, supports denser wiring, and speeds installation while maintaining adequate clearance for heat dissipation. As a member of the gM BS 88 family, this fuse provides predictable clearing characteristics, enabling reliable coordination with upstream protection and downstream devices in drive systems and PLC racks. Documentation and support from Eaton, including red spot references and BS 88 data sheets, reduce risk during design reviews and commissioning. The TMF400M450 is well-suited for control cabinets, machine enclosures, and distribution boards where standardization drives efficiency and maintenance predictability across multiple lines.
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FAQs
TMF400M450 uses the standard BS 88 form factor (60 x 60 mm body) and is designed to fit common centre-bolted fuse holders used in UK and EU panels. Check that the holder rating matches 450 A and ensures adequate clearance for heat dissipation. This compatibility supports straightforward swaps in existing installations without panel redesigns.
TMF400M450 is rated for 450 A with AC operation up to 660 V and DC operation up to 460 V. These ratings enable protection of high‑current feeders and drives in industrial systems, while delivering predictable clearing characteristics. For designers, this translates to reliable fault isolation in motor drives, conveyors, and central distribution boards.
Compliances for this fuse are managed through Eaton’s documentation set. References include CE-related declarations of conformity for Red Spot fuse-links. For formal compliance records and applicability to your regional requirements, refer to the Declarations of conformity assets and contact Eaton for the official declarations applicable to your installation.
TMF400M450 is ideal for British-standard protected installations in industrial control panels, switchboards, and motor-drive cabinets. Its 450 A rating and BS 88 gM classification make it suitable for high‑current feeders in packaging lines, processing equipment, and automation racks, where standardization reduces SKU variety and simplifies maintenance planning.
Using TMF400M450 streamlines maintenance by standardizing on a single BS 88 gM fuse across multiple lines, reducing part numbers and stocking requirements. The compatibility with Eaton’s Red Spot data and downloadable catalogs simplifies ordering, while predictable fault clearing lowers downtime during replacements and service events.