Custom Injection-Molded PLC & Instrument Connector Enclosure

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Custom Injection-Molded PLC & Instrument Connector Enclosure

This precision-engineered terminal block housing is a high-performance, two-color injection-molded component, designed for secure wiring termination and signal/power distribution in industrial PLCs, process control instruments, and automation equipment. Manufactured from flame-retardant engineering plastics, it features a 22-position numbered terminal array, integrated display window, and panel-mount interface, delivering exceptional electrical insulation, vibration resistance, and long-term durability for harsh industrial environments. As a professional custom electrical component supplier, we offer full OEM/ODM solutions, supporting 1:1 mold development, material customization, and pin configuration optimization to meet your specific industrial control system requirements.

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Core Design & Structural Advantages

22-Position Numbered Terminal Array: The dual-row, color-coded terminal slots (1-22) enable organized, error-free wiring termination, with clear number marking for simplified installation, maintenance, and troubleshooting.
Two-Color High-Visibility Design: The black main housing and bright orange terminal blocks provide high visual contrast, making wire identification and inspection fast and intuitive, reducing wiring errors on production lines.
Integrated Display & Panel-Mount Interface: The front transparent display window accommodates LCD/LED screens for instrument status, while the rear panel-mount flange enables flush, secure installation in control cabinets and instrument enclosures.
Flame-Retardant Insulation Construction: Manufactured from UL94 V-0 rated engineering plastics, the housing provides superior electrical insulation, arc resistance, and fire safety, compliant with global industrial electrical standards.
Reinforced Terminal Retention: The ribbed terminal slot design ensures secure wire clamping and retention, withstanding vibration, temperature fluctuations, and repeated wiring cycles without loosening.
Modular & Space-Saving Design: The compact, stacked terminal layout maximizes wiring density in control panels, reducing overall equipment footprint while maintaining full access to each terminal for maintenance.

Core Technical Parameters & Tolerance Table

Parameter Category	Standard Specification	Customization Range	Tolerance Requirement
Core Process	Two-Color Precision Injection Molding	Insert Molding / Ultrasonic Welding Optional	Overall Dimensional Tolerance: ±0.02mm
Base Material	Flame-Retardant PA66 (Nylon) / PC	ABS, PP, Custom Engineering Plastics	Compliant with RoHS, REACH, UL94 V-0
Terminal Count	22-Pin Dual-Row (1-10, 11-22)	Custom Pin Count (8/16/24/32 Pin)	Pin Position Tolerance: ±0.03mm
Operating Temperature	-40°C ~ +125°C (Industrial Standard)	High-Temperature Resistant Materials Up to 150°C	Heat Deflection Temperature: ≥200°C (PA66-GF30)
Insulation Resistance	≥100MΩ	Optimizable for High-Voltage Applications	Dielectric Strength: ≥2.5kV AC
Surface Finish	Matte Black / Bright Orange	Custom Color Matching, UV-Stabilized Coating	Surface Roughness Ra ≤1.6μm
Mounting Type	Panel-Mount Flange	DIN Rail Mount, PCB Mount Optional	Mounting Hole Position Tolerance: ±0.05mm
Minimum Order Quantity	1,000pcs (Mold Opening) / 5,000pcs (Mass Production)	Small-Batch Trial Production Supported	Mass Production Lead Time: 7-15 Working Days

Material Selection & Performance Assurance

Material Type	Core Features	Ideal Application Scenarios
Flame-Retardant PA66 (Nylon)	High strength, heat resistance, excellent electrical insulation, UL94 V-0 rated	Industrial PLCs, process control instruments, automation equipment
PC (Polycarbonate)	Ultra-high impact resistance, flame retardant, optical clarity	Display window components, high-reliability industrial enclosures
ABS (Acrylonitrile Butadiene Styrene)	High impact resistance, good surface finish, cost-effective	General-purpose terminal blocks, low-voltage control systems
PP (Polypropylene)	Chemical resistance, low cost, flame retardant options	Entry-level industrial terminal blocks, consumer electronics

Application Scenarios

Industrial Automation: PLC terminal blocks, process control instruments, and industrial automation control panels
Power Distribution: Electrical control cabinets, power distribution modules, and industrial power monitoring equipment.
Instrumentation & Measurement: Digital display instruments, temperature controllers, and industrial measurement devices.
Energy & New Energy: Solar inverter terminal blocks, energy storage system wiring, and EV charging control equipment.
Building Automation: HVAC control systems, building management systems (BMS), and smart building control panels.

Customization & Service Support

Full Customization: We support 1:1 mold development based on customer 3D/2D drawings or samples, with free DFM (Design for Manufacturability) analysis to optimize port layout, flow channels, and structural design.
Rigorous Quality Control: Our production follows ISO 9001 and IATF 16949 quality management systems, with 100% dimensional inspection, pressure leak testing, and material performance testing to ensure zero defects.
Comprehensive Post-Processing: Offers secondary operations including ultrasonic welding, insert pressing, surface coating, and custom assembly to deliver fully finished, ready-to-install components.
Global Supply Chain Support: Provides flexible packaging, international logistics (sea/air/express), and dedicated customer service to ensure seamless procurement for global automotive and industrial suppliers.

Packaging & Delivery

Packaging: Anti-rust plastic bags, foam lining, and sturdy master cartons to prevent damage during transit. Custom packaging available for OEM production lines.
Lead Time: Mold development: 15-25 working days; Mass production: 7-15 working days (adjustable based on order quantity).
Payment Terms: T/T, L/C, and other standard international trade terms supported.
Logistics Options: DHL, FedEx, sea freight, air freight, and other global shipping solutions available.