Precision Brass Parts for Circuit Protection Devices - MCBs, MCCBs, RCDs, Fuses, Isolators, SPD Modules

Common Sizes (Range Overview)

Materials

• High Conductivity Brass: CW614N / CuZn39Pb3
• Spring-Grade Brass: CuZn36 / CuZn30 - for flexible clip parts
• Nickel-Silver Brass (optional for anti-corrosion)
• Thermal Treated Brass for arc-resistant parts

Thread / Mounting Types

• Thread Sizes: M3, M4, M5, M6 (as per device standards)
• Press-Fit or Rivet-Fit Tabs
• PCB Solder Pins / Eyelets / Snap-Fit Types
• Slot and Clamp Features for Housing Assembly

Protection Rating

• Voltage: Up to 1000V AC/DC
• Current: 6A - 250A (based on part configuration)
• Heat Resistance: Up to 160°C continuous operation
• Dielectric Isolation ensured by insulating parts in assembly

Surface Finish Options

• Tin Plated (Standard - reliable solderability and conductivity)
• Nickel Plated (Corrosion and wear resistance)
• Silver Plated (Optional - premium for low-resistance contacts)
• Gold Plated (on request - high-reliability applications)
• Natural Brass (For non-current-carrying parts)

Features

• High Precision Machined or Stamped Parts
• Consistent Current-Carrying Capability
• Custom Profiles: U, Z, T, L, and complex bent shapes
• Minimal Contact Resistance
• Support for automatic insertion and SMT processes
• Tight tolerance ranges for OEM integration

Application Areas in EV Sector

• MCBs/MCCBs in EV Distribution Boards - Brass contacts and busbar clips
• RCDs and Isolators - Switching terminals and internal links
• EV Fuse Holders - Conductive clips and blade receptacles
• Surge Protection Devices (SPDs) - Terminal and arc diverter parts
• Onboard Protection Modules - Compact circuit linkages
• High Voltage DC Cutoffs - Arc chute and dissipation contact sets