OEM Set Screw Power Connector Block for Breaker Cable Entry and Distribution Equipment
A set screw power connector block creates a removable cable connection inside breakers, distribution units and electrical control equipment.
The stripped conductor enters the large bore in the metal body. Tightening the front screw presses the conductor against the internal contact area. The upper opening is used to fasten the block to its mating electrical component.
This page is intended for equipment manufacturers requiring a connector body made to their own installation envelope. It is not limited to one breaker model or one fixed cable size.
How the Part Is Specified
| Assembly Area | Buyer's Selection |
|---|---|
| Incoming Cable | Conductor type and cross-sectional area |
| Cable Bore | Entry diameter and insertion depth |
| Pressure Screw | Thread, drive style and permitted torque |
| Equipment Interface | Mounting-hole size and center position |
| Body Envelope | Maximum length, width and height |
| Current Contact | Required contact face and finish |
Material Selection
Aluminum alloy is frequently selected where low weight and economical production are important. The exact alloy should be chosen according to conductivity, machining behavior and mechanical strength.
The fastening screw may be produced from plated steel or stainless steel. Where copper conductors are installed in an aluminum body, the complete connection system should be evaluated for contact compatibility and long-term performance.
Production Route
The terminal body can be prepared from extruded or machined aluminum stock. Cable bores and mounting openings are drilled before the screw threads are tapped. Contact faces and edges are then finished for assembly.
Typical operations include:
Stock cutting
Cable-bore drilling
Mounting-hole machining
Thread tapping
Edge deburring
Surface finishing
Screw installation
Inspection Points
| Inspection Item | Verification |
| Cable Bore | Diameter, depth and burr condition |
| Screw Thread | Thread gauge and engagement length |
| Mounting Hole | Position and fit with mating component |
| Contact Face | Flatness and surface condition |
| Body Size | Installation-envelope dimensions |
| Screw Assembly | Drive type and tightening operation |
Electrical Validation
The metal body can be manufactured to the required dimensions, but its allowable current is determined by the completed connection system. Conductor size, alloy conductivity, contact pressure, tightening torque and temperature rise must be evaluated together.
Rated current, breaker compatibility and certification claims are therefore confirmed only when the customer provides the relevant technical requirements and test criteria.
For Pricing
Provide the following information:
Body drawing or an existing sample
Cable material and cross-sectional area
Cable insertion depth
Screw size and tightening torque
Mounting-hole dimensions
Required contact finish
Trial and production quantities
Inquiry Message
Send us the installation dimensions and cable information. We will review the connector-body structure and prepare a quotation for sampling or batch production.
Search Keywords
set screw power connector, breaker cable connector block, electrical pressure connector, mechanical wire connector, aluminum power terminal block, cable entry lug, distribution board connector, screw pressure terminal, OEM breaker contact block, machined electrical connector body
Content Style / Differentiation Point
Installation engineering and inspection style. The product is positioned as a set screw power connector block rather than a generic aluminum terminal lug. The page uses connection layout, production route and inspection checkpoints instead of the standard product-description template.
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