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MCB Injection Mold
This type of MCB housing injection mold features fixed and moving plates embedded with specialized mold inserts for the molding process; when manufacturing MCB housings of different sizes, only the inserts need to be swapped, thereby significantly reducing mold tooling costs and achieving higher production efficiency.
MCB Injection Mold
This plastic injection molding tool — the MCB injection mold — forms the plastic housings and internal parts of miniature circuit breakers with high precision. The cavity is machined from S136H or H13 tool steel and the mold base from S50C or P20, giving a rated mold life of 1,000,000 cycles. Built for stable, high‑volume injection molding of low‑voltage electrical parts, it holds tight tolerances and a clean surface finish shot after shot.
Each mold is custom-designed based on the product’s geometry, material specifications, and cavity structure, our MCB injection mold development process guide walks through every stage. By utilizing high-hardness cavity steel and durable mold bases—combined with rigorous mold testing and sample validation protocols—we ensure consistent and stable product quality from the very start of production. The delivery lead time is 45 days and includes 1,000 qualified injection-molded samples, enabling assembly and functional verification prior to mass production.
Cavity S136H/H13 · Base S50C/P20 | 1,000,000‑cycle life | 45‑day delivery with 1,000 sample parts
What Is the MCB Injection Mold?
As high-precision production tools, MCB injection molds are used to form the plastic housings and internal components of circuit breakers. Consistent wall thickness, tight tolerances, and a durable cavity are essential for parts that must assemble and perform reliably. This mold addresses those needs by:
- Hardened cavity steel – S136H or H13 resists wear and corrosion and holds a fine surface finish over long production runs.
- Durable mold base – S50C or P20 provides the structural stability needed for repeatable clamping and alignment.
- Long service life – Rated for 1,000,000 cycles to support high‑volume plastic injection molding of MCB parts.
Hardened cavity steelS136H or H13 cavities resist wear and corrosion and hold tight tolerances shot after shot.
Durable mold baseS50C or P20 base provides stable clamping, alignment, and long‑term dimensional accuracy.
1,000,000‑cycle lifeLong tooling life lowers the cost per part for high‑volume MCB production.
Validated before shipment45‑day delivery includes 1,000 qualified sample parts for fit and function checks.
Technical Specifications
| Product type | Plastic injection mold for MCB components |
|---|---|
| Cavity (core) material | S136H or H13 |
| Mold base material | S50C or P20 |
| Mold life | 1,000,000 cycles (shots) |
| Molded product | MCB housings and internal plastic parts |
| Lead time | 45 days |
| Sample delivery | 1,000 qualified injection‑molded parts included |
| Application industries | Low‑voltage electrical: MCB, MCCB, RCCB, RCBO parts |
Mold Features & Customer Benefits
Core Customer Benefits – Why Manufacturers Choose This Mold
Benefit 1: Lower cost per part
A 1,000,000‑cycle mold life spreads tooling cost across a very high part volume, reducing the per‑unit cost of every MCB housing or component you mold.
Benefit 2: Consistent part quality
Hardened S136H or H13 cavities hold tolerance and surface finish shot after shot, so parts assemble and perform the same from the first run to the millionth.
Benefit 3: Faster time to production
A 45‑day lead time plus 1,000 qualified sample parts lets you validate fit and function early and move to mass production with confidence.
Benefit 4: Built for low‑voltage electrical parts
The mold is engineered specifically for MCB housings and internal components, and the same approach extends to MCCB, RCCB, and RCBO plastic parts.
Trusted by industry leaders
Applications – Where This Mold Adds Most Value
Custom Engineering & Delivery
Request an MCB Injection Mold Quote
Send us your 3D part files or samples, target resin, and annual volume. Our engineers will propose the cavity layout, steel selection, and gating for your MCB parts — with a clear 45‑day delivery plan and 1,000 sample parts for validation.
WhatsApp: +86 150 5837 0007 | Email: xsb@benlongkj.cn | English & Chinese support
Why Choose Benlong for MCB Injection Molds?
- Precision tooling built for the plastic injection molding of low‑voltage electrical parts
- Cavity in S136H or H13, mold base in S50C or P20 for durability and finish
- Rated 1,000,000‑cycle mold life for high‑volume injection molding
- 45‑day delivery including 1,000 qualified sample parts
- Dedicated MCB, MCCB, RCCB, and RCBO manufacturing experience
- Global service and spare‑parts support
Standard Mold Package Includes
MCB injection mold · S136H or H13 cavity · S50C or P20 base · 1,000,000‑cycle rated life · 1,000 qualified sample parts · Dimensional & trial report · Operation and maintenance guidance
Related solutions
Frequently Asked Questions
The cavity is S136H or H13 and the mold base is S50C or P20, selected for wear resistance, surface finish, and structural stability.
The mold is rated for 1,000,000 cycles (shots), supporting high‑volume plastic injection molding of MCB parts.
Delivery is 45 days and includes 1,000 qualified injection‑molded sample parts for validation.
MCB housings and internal components; the same approach applies to MCCB, RCCB, and RCBO plastic parts.
Yes. After the mold trial we supply 1,000 qualified sample parts with a dimensional and function report for your approval.
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