Eaton WER-4 Telecommunication Fuse - CE Marked 32 Vdc
Part Number: WER-4
Quick Summary
WER-4 telecommunication fuse protects telecom circuits in 32 Vdc systems, enabling reliable line protection. Many engineers struggle to balance fast fuse clearing with small form factors and European regulatory requirements. This model comes CE Marked for European compliance, non-indicating by design, and rated for 4 A at 32 Vdc. For procurement teams, the Eaton Bussmann WER-4 delivers predictable performance, easy sourcing, and compatibility with Bussmann catalogs. Manufacturers gain clarity during design reviews thanks to a concise datasheet and standardized packaging, reducing time-to-deploy. From a serviceability perspective, its non-indicating format minimizes maintenance checks while providing clear diagnostic options in field installations.
Product Information
Extended Description
WER-4 Eaton: Eaton Bussmann series Type WER telecommunication fuse, 32 Vdc, 4 A, Non Indicating, Flat
Product Name
Eaton Bussmann series Type WER telecommunication fuse
Catalog Number
WER-4
UPC
051712731348
Product Length/Depth
1.39 in
Product Height
1.63 in
Product Width
0.45 in
Product Weight
0.3 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
4 A
Voltage rating
32 Vdc
Packaging type
Standard
Fuse indicator
Non-indicating
WER-4~TELEPHONE FUSE
WER-4~TELEPHONE FUSE
Bussmann series Fuseology
Eaton Specification Sheet - WER-4
Feature: 32 Vdc, 4 A rating. Business Impact: Enables precise overcurrent protection for telecom power rails, reducing fault-induced outages and equipment damage. Application: Ideal for 32 Vdc telecom circuits in data centers, central offices, and field-deployed telecom equipment. The rating supports reliable protection without oversizing the protection device. Feature: Non-indicating design. Business Impact: Minimizes maintenance complexity by avoiding unreliable visual indicators in remote or hidden compartments. Application: Suitable for remote sites or cabinet layouts where indicators are impractical and controlled monitoring is preferred. Feature: Compact footprint (1.39 in L Ă— 0.45 in W Ă— 1.63 in H). Business Impact: Frees panel space and eases retrofits in crowded telecom enclosures. Application: Retrofit scenarios in existing Bussmann WER-compatible slots and small power assemblies. Feature: Flat, low-profile fuse body. Business Impact: Reduces mechanical interference with cables and heatsinks in tight installations. Application: Tight cabinet layouts and crowded equipment bays in telecom environments. Feature: CE Marked compliance. Business Impact: Supports European regulatory alignment, lowering procurement risk for EU deployments. Application: European network equipment and service provider installations. Feature: Standard packaging and catalog compatibility. Business Impact: Simplifies stocking and procurement workflows, shortening lead times. Application: Stocking within contractor and OEM supply chains, aligned to Bussmann catalogs.
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FAQs
The WER-4 is designed for compact telecom enclosures with a footprint of 1.39 in by 0.45 in. Installers should ensure a clean 32 Vdc supply, use standard Bussmann catalog mounting spaces, and follow European CE compliance guidelines. The non-indicating design means status monitoring should rely on system-level protection signals or external indicators in the chassis.
Key specs include a 4 A amperage rating and a 32 Vdc voltage rating. The device is non-indicating and flat in construction, which minimizes space impact while delivering predictable overcurrent protection for telecom circuits in 32 Vdc networks.
Yes. The WER-4 carries CE Marked compliance, signaling conformity with European safety and product standards. It is a compatible option for EU-based network equipment and service providers seeking a validated Bussmann-series fuse within 32 Vdc telecom systems.
Non-indicating fuses reduce the risk of indicator failures in remote or dense installations but rely on external monitoring for fault indication. Maintenance workflows should incorporate system-level fault signals or periodic electrical tests to verify circuit protection status without depending on a visual fuse indicator.
Technical data is available through Eaton’s specification sheets and catalog entries. Refer to the WER-4 datasheet and Bussmann-series catalogs for detailed dimensions, electrical ratings, packaging information, and replacement part compatibility to streamline procurement and field spares planning.