Tulip Contact 630A

The 630A tulip contact is the workhorse of distribution-class MV switchgear. Most withdrawable VCBs at 12 kV sit at this rating, feeder breakers, motor feeders, smaller transformer taps. Compared to the 1250A tulip, the 630A version uses fewer fingers and a smaller ring geometry, which lowers cost and simplifies the assembly without sacrificing service life at lower current.

We supply 630A in two SKU variants: this standard listing for typical OEM drawings, and the Tulip Contact 630A (Standard Series) for cost-optimized high-volume builds. Both are 630A continuous; the difference is design complexity and per-piece cost.

Specifications

Property	Value
Rated Current	630 A (continuous)
Finger Material	Copper or copper alloy, silver-plated
Finger Count	Per drawing
Spring Material	Stainless steel or spring bronze
Spring Configuration	Per drawing
Ring / Housing	Copper, bronze, or aluminum alloy per design
Mating Stud Diameter	Per drawing
Silver Plating Thickness	Per drawing
Working Voltage	Common MV ratings: 12 / 24 kV
Insertion Cycles	Application-specific; depends on plating wear and spring fatigue

Exact certified properties for your lot are available with material documentation on request.

Applications

• Distribution-class withdrawable VCB at 12 / 24 kV with 630A continuous rating
• Feeder breaker cubicles in industrial and utility MV switchgear
• Motor feeder breakers in industrial substations
• Replacement contacts for installed 630A breaker fleets

Technical Notes

630A is the most common withdrawable VCB rating in MV distribution. The finger count and ring geometry are correspondingly smaller than 1250A; the design is mature and high-volume across the industry. This makes 630A tulip contacts a routine refurbishment line, installed fleets need contact replacements as plating wears and springs lose tension.

For new designs, the choice between this listing and Tulip Contact 630A (Standard Series) comes down to volume and price sensitivity. The standard series uses a simpler finger and spring design suitable for high-volume cost-driven builds; this listing supports more complex per-customer designs.

Sourcing & OEM

Custom 630A tulip contacts to your drawing are routine. Specify finger count, plating thickness, spring tension, and ring geometry per drawing; contact us with the drawing or sample for a project-specific quote.