Brass Panel Board Hinges-Chrome Plated

Brass Panel Board Hinges – Chrome Plated

Electrical Accessories India manufactures and exports chrome-plated brass panel board hinges for electrical enclosures, switchgear panels, motor control centres (MCCs), distribution boards, and industrial control panels. Produced at our Jamnagar, Gujarat facility from free-cutting brass (CW614N / CZ121 / IS 319), these hinges are finished with a copper-nickel-chrome (Cu-Ni-Cr) electroplating system delivering salt spray resistance exceeding 200 hours per ASTM B117. We supply electrical OEMs, panel builders, EPC contractors, and distributors across India and 30+ export markets.

Product Overview

Types and Configurations

Our brass panel board hinges are available in multiple configurations. Butt hinges (leaf hinges) are standard for flush-mounted enclosure doors in LT distribution boards, feeder pillars, and DB boxes. Piano hinges (continuous hinges) run the full door height and distribute load evenly, preferred for heavy switchgear and MCC doors. Concealed hinges are used where a clean exterior surface is required in metering enclosures and outdoor panels. Weld-on hinges are designed for sheet metal enclosures requiring MIG-welded attachment. Custom configurations to OEM drawings are a standard offering.

Material and Chrome Plating

Base material is free-cutting brass conforming to CW614N (EN 12164), CZ121 (BS 2874), or IS 319 Grade I with copper 57–59% and lead 2.5–3.5% for machinability. The electroplated chrome finish follows a Cu-Ni-Cr layering process: copper undercoat 10–15 µm, bright nickel 10–15 µm, and hard chrome 0.25–0.5 µm. Total plating thickness ensures 200+ hours salt spray resistance per ASTM B117. Hexavalent-free trivalent chrome (Cr3+) is available for RoHS compliance.

Dimensional Range

Standard butt hinge sizes range from 19×19 mm to 100×100 mm with wing widths 19–50 mm and thickness 1.2–3.0 mm. Piano hinges are supplied in lengths of 900 mm, 1200 mm, and 1800 mm with 25 mm hole spacing and widths of 25, 32, and 38 mm. Concealed hinges are available in 26 mm, 35 mm, and 40 mm cup diameters. Custom lengths, hole patterns, pin diameters, and leaf dimensions are manufactured to customer drawings. Fastener holes are punched or drilled with countersink for flush-head screws (M3, M4, M5, M6).

Corrosion and Environmental Performance

Chrome-plated brass hinges are rated for IP55 and IP65 enclosure environments when combined with door sealing gaskets. The hard chrome surface resists oils, cleaning solvents, mild acids, and saline atmospheres encountered in coastal substations, chemical plants, and offshore electrical installations. Operating temperature range is −20°C to +120°C. For extreme marine or chemical environments, we supply SS316 stainless steel hinges or double-nickel chrome plated variants as alternatives.

Load Capacity and Mechanical Properties

Standard 50 mm butt hinges support door weights up to 20 kg per pair. Piano hinges for MCC panels support up to 60 kg per 1200 mm length. The hinge pin is manufactured from hardened stainless steel (SS304 or SS316) pressed into the brass barrel using an interference fit for smooth rotation. Torque values range from 0.05 N·m (light enclosure doors) to 2.0 N·m (heavy switchgear). Cycle life exceeds 50,000 open-close operations per IEC 62208 endurance protocol.

Panel and Enclosure Compatibility

Compatible with enclosure standards including IEC 62208, IEC 60439 / IEC 61439, ANSI/NEMA 12, and IEC 60529 (IP ratings). Used in panel boards manufactured per IS 8623, BS EN 61439, and UL 508A. Hinge positions accommodate standard enclosure door gaps of 1–3 mm and door thicknesses of 1.5–3.0 mm. Mounting is compatible with M4, M5, and M6 screws in pre-punched panels from Rittal, ABB, Schneider Electric, Siemens, and Legrand frame profiles.

Key Features

• Free-cutting brass base (CW614N / CZ121 / IS 319) for precision machining and reliable plating adhesion
• Bright chrome plating (Cu-Ni-Cr system) — 200+ hours salt spray resistance per ASTM B117
• Hardened SS304/SS316 pivot pin for wear-free, long-life rotation
• Available in butt, piano (continuous), concealed, and weld-on configurations
• Custom sizes, hole patterns, and surface finishes to OEM drawings and specifications
• RoHS-compliant trivalent chrome (Cr3+) finishing available on request
• IP55/IP65 environment compatible for indoor and light-outdoor panel installations
• Non-magnetic, non-sparking brass construction for switchgear safety requirements

Enclosure Door Hardware Applications

Used in LT distribution boards, feeder pillars, automatic transfer switch (ATS) enclosures, PLC and SCADA cabinets, VFD drive enclosures, relay and protection panels, metering panels, energy meter boxes, and street lighting distribution boxes. Chrome-plated brass hinges are specified where a corrosion-resistant, visually clean finish is mandatory in indoor and light-outdoor panel installations.

Panel Builder and OEM Supply

We are a regular supplier to panel builders, DB manufacturers, switchgear integrators, and electrical OEMs requiring consistent quality hardware in large volumes. We maintain ready stock of standard sizes with 7–14 day lead times for non-standard configurations. Custom part numbers, OEM packaging, and batch certifications are available. MOQ for standard items: 100 pieces; for custom items: 500 pieces per configuration.

Surface Finish Options

Beyond standard bright chrome, we supply brass panel hinges in satin chrome (brushed), nickel-plated, zinc-plated (yellow or clear passivate), powder-coated black (RAL9005), and natural brass (lacquered) finishes. Black chrome plating is available for aesthetic panel applications. All finishes undergo adhesion testing per ASTM B571 and thickness measurement per ASTM B499/B504 before dispatch.

Quality Control and Testing

Every batch undergoes dimensional inspection per ISO 2768, plating thickness measurement by XRF (X-ray fluorescence), salt spray testing per ASTM B117 (minimum 200 hours), adhesion cross-cut test per ASTM B571, hinge pin hardness testing (HRC 35–45), and load cycle testing per IEC 62208. Material test certificates (MTCs) and inspection reports accompany every shipment. Our QMS is certified to ISO 9001:2015.

Technical Specifications

Brass Grade International Equivalents

Product Variants

• Brass Butt Hinges (Chrome Plated) – 19×19 mm to 100×100 mm, standard panel door hinge
• Brass Piano Hinges (Chrome Plated) – Full-length continuous hinges for MCC and switchgear doors
• Brass Concealed Hinges (Chrome Plated) – Cup-type, 26/35/40 mm cup diameter for meter boards and DB enclosures
• Brass Weld-On Hinges – For mild steel and GI sheet metal enclosures requiring welded attachment
• Brass Flag Hinges (Chrome Plated) – Offset mounting for flush-face panel doors
• Nickel-Plated Brass Hinges – Alternative finish for industrial and marine environments
• Custom OEM Brass Hinges – To customer drawings, any size, hole pattern, and finish

Applications

• LT distribution boards (DBs), main distribution frames (MDFs), and sub-distribution boards
• Motor control centres (MCCs) and variable frequency drive (VFD) enclosures
• Automatic transfer switch (ATS) and changeover switch panels
• PLC, SCADA, DCS, and industrial automation control cabinets
• Relay protection panels and protection & control (P&C) cubicles
• Metering panels, energy meter boxes, and feeder pillars
• Street lighting control boxes and outdoor distribution kiosks
• UPS, inverter, and battery management system (BMS) enclosures
• Telecommunications equipment racks and data centre cabinets
• Railway signalling and traction control panels

Manufacturing Process

Brass panel board hinges are produced at our Jamnagar facility through a combination of CNC stamping, milling, drilling, barrel forming, and electroplating. Raw brass bars or strips (CW614N / CZ121) are sheared to blanks and fed to hydraulic stamping presses (50–300 ton) that form hinge leaf wings to precise angle and flatness tolerances. Holes are punched in the same progressive die ensuring positional accuracy of ±0.1 mm. The barrel (knuckle) is formed by rolling from brass strip and pressing in the hardened SS pivot pin by interference fit. Assemblies are ultrasonically cleaned, then copper-plated (10–15 µm), bright-nickel-plated (10–15 µm), and hard-chrome-plated (0.25–0.5 µm) in sequence using rectified DC plating tanks under temperature and pH-controlled conditions. Final inspection includes 100% dimensional check, salt spray sampling, and functional open-close testing before packing.

Quality Standards and Certifications

• ISO 9001:2015 – Quality Management System
• ASTM B117 – Salt spray (corrosion) testing, minimum 200 hours
• ASTM B571 – Metallic coating adhesion testing
• ASTM B499 / B504 – Plating thickness measurement
• IEC 62208 – Empty enclosures for low-voltage switchgear and controlgear
• RoHS 2011/65/EU – Trivalent chrome (Cr3+) option for EU markets

Pricing

Brass Chrome Plated Panel Board Hinges: US$ 11.50 per kilogram (Ex-Works, Jamnagar, India)
Prices are indicative and subject to order quantity, size, plating specification, and LME brass prices. Request a formal quotation with your drawing or part number.

Why Choose Electrical Accessories India

• 30+ years manufacturing experience in precision brass parts and panel hardware
• In-house electroplating facility with Cu-Ni-Cr plating, quality-controlled per ASTM standards
• Custom engineering capability – any hinge size, hole pattern, or configuration to OEM drawings
• ISO 9001:2015 certified QMS with batch traceability and material test certificates
• Competitive export pricing with Ex-Works, FOB Mumbai, and CIF shipping terms
• Fast lead times – 7 days for standard sizes, 14–21 days for custom configurations
• Supply to 30+ countries – US, UK, Germany, UAE, South Africa, Australia, Southeast Asia

Frequently Asked Questions

What brass grade is used for chrome-plated panel board hinges?

We use free-cutting brass CW614N (EN), CZ121 (BS), or IS 319 Grade I — equivalent to ASTM C36000 (CuZn39Pb3). This grade provides optimal machinability for precision hinge production and excellent plating adhesion.

What is the chrome plating thickness on panel hinges?

The plating system: copper undercoat 10–15 µm, bright nickel 10–15 µm, and hard chrome 0.25–0.5 µm. Total system provides 200+ hours salt spray resistance per ASTM B117.

Are your hinges RoHS compliant?

Yes. We offer trivalent chrome (Cr3+) plating complying with RoHS Directive 2011/65/EU. Hexavalent chrome (Cr6+) is also available where not restricted by the end-use market.

What door weight can a piano hinge support?

A standard 32 mm wide brass piano hinge (1200 mm length) supports door weights up to 60 kg. For heavier MCC doors (60–120 kg), we recommend heavy-duty piano hinges or dual piano hinge configurations with intermediate support brackets.

Can you supply hinges to OEM drawings?

Yes. We manufacture custom hinges to 2D/3D drawings (DXF, DWG, STEP, PDF) with any leaf dimensions, hole patterns, pin diameters, and surface finishes. MOQ for custom items is 500 pieces. Approval samples are provided before bulk production.

What enclosure standards are the hinges compatible with?

Our panel board hinges are designed for compatibility with IEC 62208, IEC 61439 (LV switchgear assemblies), IS 8623 (Indian switchgear standard), ANSI/NEMA 12, and UL 508A (industrial control panels).

Do you supply complete panel door hardware sets?

Yes. We supply complete panel hardware sets including hinges, panel locks (cam locks, T-handle locks, quarter-turn fasteners), panel handles, earth studs, cable gland plates, and bus bar insulators. Coordinated hardware sets simplify procurement for panel builders.

What is your minimum order quantity and lead time?

Standard sizes are maintained in ready stock with 7-day lead time. Custom sizes require 14–21 days after drawing approval. MOQ for standard items: 100 pieces; custom items: 500 pieces per size.

International Terminology

Related Products

• Panel Board Fittings – All Products
• Aluminum Neutral Bars and Terminal Bars
• Copper Terminal Bars and Ground Bars
• Brass panel cam locks and T-handle locks
• Quarter-turn fasteners for enclosure doors
• Brass earth studs and earthing terminals
• Cable gland plates (brass, stainless steel, aluminium)
• Brass bus bar insulators and supports
• DIN rail mounting hardware and terminal blocks
• Panel handle and grab handles for switchgear

Request a Quote

Contact Electrical Accessories India for pricing, samples, and technical specifications for chrome-plated brass panel board hinges. Provide your hinge type (butt/piano/concealed), size range, quantity, and finish requirement.

Export enquiries: info@elecaccs.com | www.elecaccs.com | Jamnagar, Gujarat, India