The Plastic Housing Assembly for Motor Protection Circuit Breaker forms the protective insulated body for industrial motor protection switchgear. Molded from flame-retardant…
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From initial spatial requirements and multi-tier structural design to DFM analysis, mold tooling, dielectric testing, and complete sub-assembly—we provide complete custom enclosure solutions ready for distribution.
The Plastic Housing Assembly for Motor Protection Circuit Breaker forms the protective insulated body for industrial motor protection switchgear. Molded from flame-retardant engineering plastics, this modular enclosure houses high-voltage phase conductors and arc chutes while providing operators with an intuitive rotary handle interface for ON/OFF switching, manual tripping, and current adjustment access.
Rotary Switch Interface: Ergonomic black rotary dial with distinct “I” (ON) and “O” (OFF) position markings for positive manual switching and lock-out capability.
High-Visibility Status Stripe: Features a red accent bar at the top edge of the front housing for quick visual identification on control panels.
Thermal Adjustment Access: Front-facing calibration screw aperture allows easy access for setting the motor overload trip current rating.
Terminal Protection: Deep terminal well shrouds with integrated screw access ports shield 3-pole line and load wiring from accidental hand contact.
Integrated Labeling Recess: Dedicated white marker block on the front face for circuit identification and panel labeling.
DIN Rail & Panel Mount Base: Rear housing integrates standard 35mm DIN rail snap clips and sub-plate screw mounting points for quick installation.
Product Name: Plastic Housing Assembly for Motor Protection Circuit Breaker
Number of Poles: 3-Pole (3P) Terminal Configuration
Color Scheme: Dark Gray Front Face with Light Gray Base and Red Accent Stripe
Mounting Type: 35mm DIN Rail / Direct Screw Panel Mount
Material: Flame-Retardant Thermoplastic Polymer
Applications: Motor Protection Circuit Breakers (MPCB), Manual Motor Starters (MMS), Motor Control Centers (MCC), and Industrial Automation Control Panels
| Parameter | Reference Detail |
|---|---|
| Product Name | Plastic Housing Assembly for Motor Protection Circuit Breaker |
| Mold Application | Protective insulated body & rotary control enclosure for motor protection switchgear |
| Mold Material | Selected according to project requirements |
| Number of Cavities | Determined after DFM evaluation |
| Plastic Material | Flame-retardant thermoplastic polymer |
| Number of Poles | 3-Pole (3P) terminal configuration |
| Color Scheme | Dark gray front face with light gray base, black rotary handle, and red accent stripe |
| Mounting Type | 35mm DIN rail / direct screw panel mount |
| Primary Function | Housing phase conductors & arc chutes, rotary switching, overload calibration access, and finger-safe terminal protection |
| Applications | Motor Protection Circuit Breakers (MPCB), Manual Motor Starters (MMS), Motor Control Centers (MCC), and Industrial Automation Control Panels |
Jingmu develops custom molds and molded components from customer drawings or samples. Share the part geometry, assembly requirements, material specification and expected production volume so our engineering team can review feasibility.
Send 2D drawings or 3D CAD files, the required material, key dimensions and tolerances, expected quantities and any electrical or environmental requirements. If drawings are unavailable, contact us to discuss a sample-based review.
The team reviews material selection, mold structure, assembly fit and inspection needs during the DFM stage. Final specifications, trial requirements and delivery timing are agreed for the individual project before production.
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Explore moreFrom requirement review to final delivery, each stage is managed against the agreed technical and quality requirements.
Review the application, customer drawings, 3D models, material requirements, tolerances and technical specifications. Confirm manufacturability through DFM analysis and agree on key quality requirements.
Select suitable mold steel, plastic resin and purchased components according to the application, part performance, surface finish and expected production volume. Confirm material grades and applicable specifications.
Develop the 3D mold design and detailed drawings. Define the mold structure, part dimensions, gating, cooling, venting and ejection systems to meet the approved technical requirements.
Machine the mold frame and components to approved drawings, assemble the mold and conduct trial molding. Prepare samples and document trial conditions for review and validation.
Evaluate sample dimensions, appearance, assembly fit and applicable functional or performance requirements. Record results, resolve identified issues and obtain the required sample approval.
Begin controlled production after sample and specification approval. Follow the agreed process settings, inspection plan and assembly requirements to maintain consistent product quality.
Inspect finished molds or products for specified dimensions, structure, appearance and applicable functions. Review inspection results, traceability and quality records before shipment release.
Clean and protect the mold or products and use suitable packaging for shipment. Verify labels, quantities and delivery documents, then arrange delivery according to the agreed shipping requirements.
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