Allen-Bradley 188-K3D040 Miniature Circuit Breaker – 4A Compact Protection Solution
The Allen-Bradley 188-K3D040 Miniature Circuit Breaker delivers precision overcurrent and short-circuit protection for industrial electrical systems. Engineered for reliability in demanding environments, this DIN-rail mounted component ensures operational safety across manufacturing, energy, and automation applications.
Technical Specifications
- Manufacturer: Allen-Bradley
- Model: 188-K3D040
- Rated Current: 4 A
- Poles: 1
- Trip Type: K (Universal)
- Certifications: CE, RoHS
- Enclosure: Thermoplastic (IP20 Protection)
Key features include instant-response trip mechanisms that prevent equipment damage, compact DIN-rail mounting for space-efficient panel designs, and flame-retardant thermoplastic housing rated for industrial temperature ranges. The 188-K3D040 complies with global safety standards while providing maintenance-free operation in control cabinets, motor starters, and power distribution systems.
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Why Choose Stoker Automation Technology?
With 20+ years as an industrial automation specialist, Stoker Automation Technology maintains a 5,000 m² warehouse with over 10,000 industrial components in stock. We provide:
- 2-year warranty on Allen-Bradley products
- 24-hour technical support from certified engineers
- Same-day shipping for in-stock items
- OEM-level quality assurance with full traceability
- Custom sourcing for obsolete or hard-to-find components
Our expertise spans critical sectors including power generation, manufacturing, and process automation. When you partner with us, you receive more than products – you gain a dedicated technical team committed to minimizing your downtime and maximizing system reliability.
Contact Our Specialists:
WhatsApp: +86 190 6659 1275
Email: abbdcs36@gmail.com
Can’t find your model? We maintain one of Asia’s largest inventories of discontinued and rare industrial components.








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