How it connects
Plug blades push straight into spring contacts in the receptacle slots and are held by friction; the round/U ground pin makes first. Non-locking.
Male and female halves
This is the female receptacle (R); the male plug is the NEMA 6-15P with two flat blades in line horizontally plus a U-shaped ground pin.
Usually connects to
- NEMA 6-15P plug
Common sizes
- Single size: 15 A, 250 V. Related family members are 6-20R (20 A) and 6-30R / 6-50R.
Where it is used
window air conditionerscommercial/industrial 240 V equipmentserver racks and PDUsshop tools
Variations
- duplex receptacle
- inline connector body
- 5-15R/6-15R combination duplex
- tamper-resistant
- hospital grade
How to recognise it
Face with two horizontal slots side by side on one line (tandem, like a flat-lying pair) above a U-shaped/D-shaped ground hole; marked 15A 250V.
Often confused with
| Confused with | How to tell them apart |
|---|---|
| NEMA 5-15R | 5-15R has two vertical parallel slots (one wider, neutral); 6-15R has both slots horizontal and in line. |
| NEMA 6-20R | 6-20R has one slot T-shaped (horizontal + vertical) to also accept 6-15P; 6-15R has two plain horizontal slots. |
Also called
6-15RNEMA 6-15 outlet15 A 250 V receptacle240 V 15 A outlet
Good to know
Sample part (Leviton 5031-W) is a combination duplex with one 5-15R and one 6-15R outlet; the 6-15R port is the one with horizontal slots. Dimensions given by agents (18.6 mm spacing, 16 mm insertion) are estimates, not verified.
Related connections
Design with real parts
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