Product
Product Details
Brass Fuse Clips
Brass Fuse Clips
Brass fuse clips are precision-pressed spring-form brass components that grip and retain cylindrical fuse cartridges, HRC fuse elements, and fuse links in fuse holders, distribution boards, fuse switches, and switchgear panels. Also known as brass fuse contacts, brass fuse holder clips, brass fuse cartridge clips, brass fuse grip contacts, brass fuse cap contacts, brass fuse saddle contacts, brass fuse end caps, and brass fuse clip assemblies, these parts are manufactured from CW614N (CuZn39Pb3) and CZ121 brass strip by progressive die stamping at Electrical Accessories India. Supplied to fuse gear OEMs, switchgear manufacturers, distribution board makers, and electrical panel assemblers.
Product Overview
Cylindrical Fuse Cartridge Clips
Brass cylindrical fuse clips, brass D02 fuse clips, brass D01 fuse contacts, brass D03 fuse holder contacts, brass cylindrical fuse saddles, and brass automotive fuse clips are the most common form. They are formed from brass strip by progressive die stamping into a U-shape or saddle shape that grips the end cap of a cylindrical glass or ceramic fuse cartridge. Spring-action retention force is controlled by the brass temper and clip profile. Standard sizes cover BS 1361 (UK domestic fuse 5A–60A), IEC 60269 Type gG, DIN 72581 automotive fuses, and IEC 60127 miniature fuses (5×20 mm, 6.3×32 mm).
HRC Fuse Clips and Knife-Blade Fuse Contacts
Brass HRC fuse clips, brass BS88 fuse contacts, brass BS1362 plug fuse clips, brass DIN fuse clips (NH fuse contacts), brass knife-blade fuse clips, and brass HRC fuse end cap contacts retain high-rupturing-capacity (HRC) fuse links with knife-blade terminals. The contacts are precision blanked and formed from heavy-gauge brass strip (2.0–5.0 mm) to grip the fuse blade terminal under controlled spring pressure. Silver plating (10–25 μm) is applied to contact faces to ensure low contact resistance and reliable make/break. Used in BS88 fuse switch gear (200A–630A), IEC 60269-2 NH fuse disconnectors (160A–1250A).
Edison Screw Fuse Holders and Cap Contacts
Brass Edison screw (ES/E27/E14) fuse cap contacts, brass screw shell fuse contacts, brass fuse cap ferrules, and brass fuse holder bayonet caps are used in domestic fuse boards, socket outlet fuse assemblies, and vintage electrical fittings. These are deep-drawn or stamped brass shells with Edison screw threads (E14, E27, E40) formed into the contact profile. Used in older UK domestic installations (BS 1361 rewireable fuse holders), heritage lighting fuse applications, and certain European and South American fuse holder designs.
Automotive and PCB Fuse Clips
Brass automotive fuse clips, brass blade fuse holders, brass PCB fuse clips, brass panel-mount fuse holders, brass in-line fuse holders, and brass miniature fuse contacts are used in automotive fuse boxes, marine electrical systems, motorcycle wiring, PCB-mounted fuse assemblies, and electronic equipment protection. These are miniature stamped brass components with tin or silver plating. Standard profiles fit 5×20 mm, 6.3×32 mm (IEC 60127), ATO/ATC (JASO F632) blade fuses, MIDI/MEGA fuses, and ISO 8820 automotive fuses. Formed from 0.3–0.8 mm brass strip for miniature PCB clips; 0.8–2.0 mm for panel-mount.
Fuse Carrier and Fuse Base Assembly Contacts
Brass fuse carrier contacts, brass fuse base contacts, brass fuse disconnector contacts, brass fuse neutral links, brass fuse carrier stab contacts, and brass fuse base terminal screws form the complete fuse holder assembly. These are manufactured as matched sets — the carrier clip (moving contact) and the base saddle (fixed contact) — with controlled clip interference to ensure adequate retention force without excessive insertion effort. Full assembly dimensional control ensures consistent contact force across production batches. Used in domestic consumer units, commercial distribution boards, and industrial fuse switch disconnectors.
Key Features
- CW614N (CuZn39Pb3) and CZ121 brass — optimal spring properties and machinability
- Progressive die stamped — ±0.05 mm contact face profile tolerance
- Spring retention force controlled by temper and profile — H02 or H04 temper
- Tin plating (5–15 μm) standard; silver plating (10–25 μm) for HRC contacts
- Compliant with IEC 60269, BS 88, BS 1361, DIN VDE 0636, IEC 60127
- 100% dimensional inspection; contact resistance and retention force tested per batch
- Custom profiles for OEM fuse gear — prototype to high-volume production
- Full material, process, and electrical documentation standard
Spring Retention Force and Temper Control
Brass fuse clips depend on the spring-back properties of half-hard (H02) or hard (H04) brass strip for clip retention force. CW614N brass in H02 temper (0.2% proof stress ~340 MPa) provides retention forces of 10–50 N for standard cylindrical fuse clips (BS 1361, IEC 60269 Type D02). H04 temper (~430 MPa proof stress) is used for higher retention force requirements. Retention force is tested by spring force gauge at clip opening; minimum/maximum values are specified per IEC 60670 for fuse holder clips. In-process temper verification by Vickers hardness (100–130 HV for H02).
Contact Resistance and Silver Plating
Brass fuse contacts must maintain contact resistance below 100 μΩ per IEC 60269-1 to avoid excessive heating at rated fuse current. Silver plating (10–25 μm rack plating) on all contact faces reduces initial resistance and prevents the brass surface oxidation that increases resistance over service life. XRF plating thickness verification is performed per production batch. Contact resistance is measured by micro-ohmmeter on representative samples. HRC fuse contacts (knife-blade type) require higher silver plating (20–50 μm) due to the higher currents and more vigorous insertion/withdrawal service.
Dimensional Precision for Fuse Retention
Fuse clip opening dimension (un-spread) must match the fuse cartridge OD within ±0.2 mm for correct retention force. Clip depth (contact length) determines the current-carrying cross-section and must be within ±0.3 mm of nominal. Hole position for mounting screws must be within ±0.1 mm to align with fuse holder base mounting. All critical dimensions are measured on CMM for new clip designs; statistical process control (SPC) is applied in production.
Compatible Fuse Standards and Sizes
Brass fuse clips manufactured to: BS 1361 (UK domestic, 5A–45A fuse links); IEC 60269-1 Type gG D01/D02/D03; IEC 60127 (5×20 mm, 6.3×32 mm miniature); DIN VDE 0636 NH (DIN 00, 0, 1, 2, 3); BS88-2 (200A–630A knife-blade); JASO F632 ATO/ATC automotive; ISO 8820 Series VI (MIDI/MEGA); custom profiles for OEM fuse gear manufacturers. Any non-standard clip profile manufactured to customer drawing.
Tin and Silver Plating Options
Electroplated tin (5–15 μm): standard for general-purpose fuse clips, domestic distribution boards, and low-current applications. Electroplated silver (10–25 μm rack plating): specified for HRC fuse clips, high-current fuse contacts (>100A), and frequent insertion/withdrawal applications. Silver-flash (1–3 μm): for PCB-mount fuse clips where full silver thickness is not economically justified. Nickel plating (3–10 μm): for high-temperature fuse gear. All platings are barrel or rack plated and XRF verified per batch.
Technical Specifications
| Parameter | Specification |
|---|---|
| Base Material | CW614N (CuZn39Pb3), CZ121, CW505L (70/30 Brass for spring clips) |
| Strip Thickness | 0.3 mm to 5.0 mm depending on fuse type |
| Temper | H02 (half-hard) or H04 (hard) for spring function |
| Retention Force | 10–100 N (clip dependent, per IEC 60670) |
| Contact Face Tolerance | ±0.05 mm |
| Surface Finish | Tin-plated (5–15 μm), Silver-plated (10–50 μm) |
| Applicable Standards | IEC 60269, BS 88, BS 1361, DIN VDE 0636, IEC 60127, ISO 8820 |
Material Grades and International Equivalents
| India IS | USA ASTM/UNS | UK BS EN | Germany DIN | Europe EN | ISO | Common Name |
|---|---|---|---|---|---|---|
| IS 319 Type 2 | C37700/ASTM B283 | CW614N/BS EN 12165 | CuZn39Pb3/DIN 17660 | EN CW614N | ISO 426/1 | CW614N Free Machining Brass |
| IS 319 Type 3 | C28000/ASTM B36 | CZ121/BS 2870 | CuZn40Pb2/DIN 17660 | EN CW614N | ISO 426/1 | CZ121, 60/40 Brass |
| IS 319 Type 1 | C26000/ASTM B36 | CZ106/BS 2870 | CuZn30/DIN 17660 | EN CW505L | ISO 426/1 | Cartridge Brass 70/30 |
Product Types and Variants
Cylindrical fuse saddle clips (D01/D02/D03); HRC knife-blade fuse contacts (DIN 00–3, BS88); miniature PCB fuse clips (5×20 mm, 6.3×32 mm); automotive blade fuse holders (ATO/ATC, MIDI, MEGA); Edison screw fuse cap contacts; fuse carrier stab contacts; fuse base saddle contacts; panel-mount fuse holders; custom OEM profiles to drawing.
Applications in Industry
Domestic consumer unit fuse holders; commercial distribution board fuse bases; industrial fuse switch disconnectors; motor starter fuse carriers; automotive and marine fuse boxes; PCB-mounted fuse holders in electronic equipment; railway rolling stock fuse gear; military and defence equipment fuse holders; EV charging station DC fuse assemblies.
Manufacturing Process
- Brass strip procurement — CW614N/CZ121 ASTM B36/BS EN 12165, H02/H04 temper, with MTC
- Incoming inspection — composition (XRF), hardness (Vickers), thickness, conductivity
- Progressive die blanking and forming — clip profile, contact face, and fixing holes in one pass
- Coining — contact face coining for controlled surface
- Deburring — barrel deburring; burr <0.05 mm on contact faces
- Cleaning — alkaline degreasing, acid pickling
- Plating — barrel tin or rack silver plating
- 100% dimensional inspection; sampling retention force and contact resistance test
- Packing — poly bag per lot; export carton with documentation
Quality Standards and Certifications
Material: ASTM B36, BS EN 12165. Performance: IEC 60269-1, IEC 60670, BS 88. Plating: IEC 60068-2-20 (tin), ASTM B700 (silver). ISO 9001:2015 QMS. REACH, RoHS. EN 10204 Type 3.1 MTCs standard.
Why Choose Electrical Accessories India
Electrical Accessories India manufactures brass fuse clips and fuse contacts from its Jamnagar facility for fuse gear OEMs worldwide. Our precision progressive dies achieve ±0.05 mm contact face tolerances. In-house silver plating lines support both rack plating for HRC contacts and barrel plating for small standard clips. We support prototype samples and scale to millions of pieces per year. Full material, plating, and electrical documentation is standard with every shipment.
Frequently Asked Questions (FAQ)
What brass grade is best for fuse clips?
CW614N (CuZn39Pb3) is the standard grade for fuse clips — it provides good spring properties in H02 temper, excellent machinability for secondary operations, and good electrical conductivity. For higher spring retention force, CW505L (70/30 cartridge brass) in H04 temper is specified.
Why is silver plating used on HRC fuse contacts?
HRC fuse contacts carry currents from 100A to 1250A. Silver plating reduces contact resistance at the fuse blade-to-contact interface, preventing localised heating that would pre-heat the fuse element and alter its time-current characteristic. Silver also provides good arc erosion resistance during fuse replacement operations.
What retention force should brass fuse clips have?
IEC 60670 specifies that fuse holder clips must retain the fuse cartridge securely in service (retention) but allow removal by hand with a maximum of 50 N withdrawal force (for clips operated without tools). Standard BS 1361 domestic fuse clips are designed for 15–30 N retention; IEC D02 industrial clips for 20–50 N.
Can OEM fuse clip profiles be manufactured to drawing?
Yes. All our standard fuse clips are already custom profiles for specific OEM fuse gear. We manufacture any fuse clip geometry from customer 2D DXF or DWG drawings. DFM review and prototype samples are provided before production release.
What is the minimum order quantity?
Standard profiles: 500 pieces. New OEM profiles: 1000 pieces for new tooling. Prototype samples: 50–100 pieces for qualification and type testing.
Do you supply complete fuse holder assemblies?
We supply the metal contact components (clips, saddles, base contacts). Complete fuse holder assemblies incorporating plastic base bodies, terminals, and contact metalwork are available as a sub-assembly service for OEM customers.
What documentation is provided?
MTC (EN 10204 Type 3.1), hardness test report, plating thickness (XRF), contact resistance test, retention force test, REACH declaration, RoHS declaration, packing list, and commercial invoice.
Are brass fuse clips available with nickel plating?
Yes. Nickel-plated brass fuse clips (3–10 μm) are available for applications where tin plating is unsuitable (high-temperature environments above 120°C or where tin whisker risk must be avoided in RoHS-compliant designs). Contact us for availability.
Equivalent Terms – Multilingual Reference
| Language | Term 1 | Term 2 | Term 3 |
|---|---|---|---|
| Spanish | Clip de fusible de latón | Contacto de portafusible de latón | Grapa de fusible de latón |
| Russian | Латунный контакт предохранителя | Клипса предохранителя латунная | Держатель предохранителя латунь |
| French | Clip de fusible en laiton | Contact de porte-fusible laiton | Agrafe de fusible en laiton |
| Portuguese | Clipe de fusível em latão | Contato porta-fusível em latão | Grampo de fusível em latão |
| Italian | Clip fusibile in ottone | Contatto portafusibile in ottone | Graffetta fusibile in ottone |
Related Products and Linked Terms
- Brass Stamping – Brass Stamped Parts and Components
- Electrical Pressed Switch Parts in Brass
- Brass Fuse Clips – Brass Fuse Holders
- Brass Switch Contacts – Electrical Contact Parts
- Brass Grounding Tags – Brass Earth Tags
- Brass Earthing Terminals and Brass Earth Tags
- Copper Pressing and Copper Pressed Parts
- Copper Fuse Clips – Pressed Copper Fuse Clips
- Brass Parts – Brass CNC Machined Parts
Indicative Pricing
Brass Items: US$ 11.50 per kilogram, CIF USA Port
Prices are indicative and subject to change based on quantity, specification, alloy grade, and market conditions. Contact us with your RFQ for a firm quotation.
Request a Quote
Supply your drawing, fuse standard reference, and quantity to receive a technical and commercial proposal within 24 hours. We export to 30+ countries with full shipping documentation.
Contact us: Send your RFQ with fuse standard (e.g., IEC 60269 D02), current rating, quantity, and plating requirement. We respond within 24 business hours.