North American Charging Standard

North American Charging System
(SAE J3400)

NACS alternating current (AC)/direct current (DC) connector (center), shown between SAE J1772 (left) and Type 2 (right) AC connectors. Non-NACS DC connectors are even larger.
Type	Electric vehicle charging
Production history
Designer	Tesla, Inc.
Designed	2021
Standardized	pending
Manufacturer	Tesla, Volex
General specifications
Pins	5
Electrical
Max. voltage	277 Volt (V) AC 500 or 1,000 V DC
Max. current	In excess of 650 amperes (A)
Pinout
Pinouts for NACS, looking at end of plug (attached to electric vehicle supply equipment cord)
DC+/L1	DC+ / Line 1	Positive current (DC), Line 1 (split phase AC), Line (single phase AC)
DC−/L2	DC− / Line 2	Negative current (DC), Line 2 (split phase AC), Neutral (single phase AC)
G	Ground	full-current protective grounding system
CP	Control pilot	charging state/current signaling
PP	Proximity pilot	vehicle connector status signaling
References:[1][2]

The North American Charging System (NACS), being standardized as SAE J3400, is an electric vehicle (EV) charging connector system developed by Tesla, Inc. It has been used by all North American market Tesla vehicles since 2021 and was opened for use by other manufacturers in November 2022. It is backwards compatible with the proprietary Tesla connectors made before 2021.

Between May 2023 and February 2024, almost all other vehicle manufacturers have announced that their electric vehicles in North America will be equipped with the NACS charge port, starting in 2025. Several electric vehicle charging network operators and equipment manufacturers have also announced plans to add NACS connectors.