How it connects
The matching plug pushes straight into the three keyed slots. Spring contacts grip its blades and conduct electricity; there is no twist lock or fluid seal.
Male and female halves
This is the female receptacle (10-30R), with recessed contacts. Its mating male plug is designated 10-30P.
Usually connects to
Common sizes
- 10-30R specifies one 30 A, 125/250 V mating configuration, not a size range. Housing, face diameter and mounting dimensions vary by product.
Where it is used
Legacy three-wire electric dryer connectionsResidential power outlets
Variations
- Flush-mount receptacle
- Surface-mount receptacle
How to recognise it
Look for the 10-30R marking and 30 A, 125/250 V rating. The face has two angled flat-blade slots and one L-shaped neutral slot, with no separate ground opening. Orientation depends on mounting; the neutral is not inherently at the top.
Also called
10-30R outletthree-prong dryer receptacle
Good to know
A 56.896 mm face diameter is product-specific rather than an established mating-interface dimension.
Related connections
Design with real parts
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