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Power Triple Lock Connector System

TE Connectivity's (TE) Power Triple Lock (PTL) Connector System offers three locking methods and an enhanced design to meet the market demand for improved connector stability and reliability in power and signal applications. An audible 'lock' latch provides confirmation when the cap and plug are mated while the ribs surrounding the latch prevent wires from becoming snagged underneath the latch. Optional Connector Position Assurance (CPA) ensures the PTL Connector System is not accidentally disengaged. The optional Terminal Position Assurance (TPA) feature ensures contacts are fully seated in the housing and provides an added measure against contact backout. Additional features include high temperature housings up to 150°C (302°F) and an upgraded lanceless contact design.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Headers & Wire Housings 16-20 AWG PhsBr Rcpt Con Term Reel/3700 1971783-1 TE Connectivity 3,700: $0.056 40,700In Stock 59,200Expected 2026/11/02	Mfr. Part No. 1971783-1 Mouser Part No 571-1971783-1	TE Connectivity	Headers & Wire Housings 16-20 AWG PhsBr Rcpt Con Term Reel/3700 Learn More about TE Connectivity te ptl connectors	Datasheet	40,700In Stock 59,200Expected 2026/11/02	Reel $0.056 $0.055 $0.052 $0.049 $0.047 $0.044	Min.: 3,700 Mult.: 3,700 : 3,700
Headers & Wire Housings 16 20 Awg Receptacle contact 1971783-2 TE Connectivity 3,700: $0.045 77,700In Stock	Mfr. Part No. 1971783-2 Mouser Part No 571-1971783-2	TE Connectivity	Headers & Wire Housings 16 20 Awg Receptacle contact Learn More about TE Connectivity te ptl connectors	Datasheet	77,700In Stock	Reel $0.045 $0.041	Min.: 3,700 Mult.: 3,700 : 3,700
Headers & Wire Housings 16-20 AWG Brass Pin Con Term Reel/3700 1971784-1 TE Connectivity / AMP 3,700: $0.044 66,600In Stock	Mfr. Part No. 1971784-1 Mouser Part No 571-1971784-1	TE Connectivity / AMP	Headers & Wire Housings 16-20 AWG Brass Pin Con Term Reel/3700 Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	66,600In Stock	Reel $0.044 $0.042 $0.04 $0.034 $0.031	Min.: 3,700 Mult.: 3,700 : 3,700
Headers & Wire Housings 22 AWG PhosBr Rcpt Contact Terminal 1971785-1 TE Connectivity / AMP 4,400: $0.062 66,000In Stock	Mfr. Part No. 1971785-1 Mouser Part No 571-1971785-1	TE Connectivity / AMP	Headers & Wire Housings 22 AWG PhosBr Rcpt Contact Terminal Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	66,000In Stock	Reel $0.062 $0.057 $0.053	Min.: 4,400 Mult.: 4,400 : 4,400
Headers & Wire Housings CPA 1971789-1 TE Connectivity 1: $0.30 38,506In Stock	Mfr. Part No. 1971789-1 Mouser Part No 571-1971789-1	TE Connectivity	Headers & Wire Housings CPA Learn More about TE Connectivity te ptl connectors	Datasheet	38,506In Stock	$0.30 $0.255 $0.233 $0.20 View $0.184 $0.166 $0.162 $0.149	Min.: 1 Mult.: 1
Power to the Board 2x4 plug housing lgr Key A 5-1971776-4 TE Connectivity 1: $1.16 3,998In Stock	Mfr. Part No. 5-1971776-4 Mouser Part No 571-5-1971776-4	TE Connectivity	Power to the Board 2x4 plug housing lgr Key A Learn More about TE Connectivity te ptl connectors	Datasheet	3,998In Stock	$1.16 $0.983 $0.877 $0.835 View $0.783 $0.745 $0.683 $0.663 $0.626	Min.: 1 Mult.: 1
Heavy Duty Power Connectors PTL MFBL 1X3 PLUG HOUSING 5-2232362-3 TE Connectivity / AMP 1: $0.461 7,248In Stock 2,000Expected 2026/10/26	Mfr. Part No. 5-2232362-3 Mouser Part No 571-5-2232362-3	TE Connectivity / AMP	Heavy Duty Power Connectors PTL MFBL 1X3 PLUG HOUSING Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	7,248In Stock 2,000Expected 2026/10/26	$0.461 $0.39 $0.348 $0.331 View $0.297 $0.281 $0.261 $0.252 $0.245	Min.: 1 Mult.: 1
Power to the Board 1 x 2 PBT-A Cap Hsg Panel Mount 1-1971772-2 TE Connectivity / AMP 1: $0.761 4,478In Stock	Mfr. Part No. 1-1971772-2 Mouser Part No 571-1-1971772-2	TE Connectivity / AMP	Power to the Board 1 x 2 PBT-A Cap Hsg Panel Mount Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	4,478In Stock	$0.761 $0.649 $0.561 $0.526 View $0.478 $0.407 $0.405 $0.394 $0.372	Min.: 1 Mult.: 1
Power to the Board 1 x 3 PBT-A Cap Hsg Panel Mount 1-1971772-3 TE Connectivity / AMP 1: $0.78 17,451In Stock	Mfr. Part No. 1-1971772-3 Mouser Part No 571-1-1971772-3	TE Connectivity / AMP	Power to the Board 1 x 3 PBT-A Cap Hsg Panel Mount Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	17,451In Stock	$0.78 $0.664 $0.593 $0.548 View $0.483 $0.429 $0.422 $0.415	Min.: 1 Mult.: 1
Power to the Board 1 x 4 PBT-A Cap Hsg Panel Mount 1-1971772-4 TE Connectivity / AMP 1: $0.73 7,323In Stock	Mfr. Part No. 1-1971772-4 Mouser Part No 571-1-1971772-4	TE Connectivity / AMP	Power to the Board 1 x 4 PBT-A Cap Hsg Panel Mount Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	7,323In Stock	$0.73 $0.618 $0.552 $0.505 View $0.468 $0.433 $0.414 $0.409 $0.395	Min.: 1 Mult.: 1
Power to the Board 1 x 2 PBT-A Plug Hsg 1-1971773-2 TE Connectivity / AMP 1: $0.64 15,653In Stock	Mfr. Part No. 1-1971773-2 Mouser Part No 571-1-1971773-2	TE Connectivity / AMP	Power to the Board 1 x 2 PBT-A Plug Hsg Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	15,653In Stock	$0.64 $0.483 $0.454 $0.422 View $0.355 $0.342 $0.331 $0.32 $0.313	Min.: 1 Mult.: 1
Power to the Board 1 x 3 PBT-A Plug Hsg 1-1971773-3 TE Connectivity / AMP 1: $0.661 10,544In Stock	Mfr. Part No. 1-1971773-3 Mouser Part No 571-1-1971773-3	TE Connectivity / AMP	Power to the Board 1 x 3 PBT-A Plug Hsg Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	10,544In Stock	$0.661 $0.558 $0.498 $0.475 View $0.421 $0.38 $0.349 $0.342	Min.: 1 Mult.: 1
Power to the Board 1 x 4 PBT-A Plug Hsg 1-1971773-4 TE Connectivity / AMP 1: $0.661 15,275In Stock	Mfr. Part No. 1-1971773-4 Mouser Part No 571-1-1971773-4	TE Connectivity / AMP	Power to the Board 1 x 4 PBT-A Plug Hsg Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	15,275In Stock	$0.661 $0.564 $0.504 $0.48 View $0.428 $0.388 $0.369 $0.368 $0.361	Min.: 1 Mult.: 1
Power to the Board 2 x 4 PBT-A Cap Hsg Panel Mount 1-1971775-4 TE Connectivity / AMP 1: $0.83 4,054In Stock 17,200Expected 2026/10/23	Mfr. Part No. 1-1971775-4 Mouser Part No 571-1-1971775-4	TE Connectivity / AMP	Power to the Board 2 x 4 PBT-A Cap Hsg Panel Mount Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	4,054In Stock 17,200Expected 2026/10/23	$0.83 $0.702 $0.627 $0.597 View $0.552 $0.533 $0.507 $0.476 $0.469	Min.: 1 Mult.: 1
Headers & Wire Housings 3 x 4 PBT-A Plug Hsg 1-1971876-4 TE Connectivity / AMP 1: $1.04 2,665In Stock 3,000Expected 2027/02/18	Mfr. Part No. 1-1971876-4 Mouser Part No 571-1-1971876-4	TE Connectivity / AMP	Headers & Wire Housings 3 x 4 PBT-A Plug Hsg Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	2,665In Stock 3,000Expected 2027/02/18	$1.04 $0.88 $0.786 $0.776 View $0.699 $0.649 $0.60 $0.569	Min.: 1 Mult.: 1
Automotive Connectors 2 X 3 150C BLK TPA-Locking Plate 1971778-3 TE Connectivity / AMP 1: $0.29 13,121In Stock	Mfr. Part No. 1971778-3 Mouser Part No 571-1971778-3	TE Connectivity / AMP	Automotive Connectors 2 X 3 150C BLK TPA-Locking Plate Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	13,121In Stock	$0.29 $0.243 $0.221 $0.209 View $0.192 $0.163 $0.155 $0.154 $0.149	Min.: 1 Mult.: 1
Automotive Connectors 2 X 4 150C BLK TPA-Locking Plate 1971778-4 TE Connectivity / AMP 1: $0.34 17,852In Stock	Mfr. Part No. 1971778-4 Mouser Part No 571-1971778-4	TE Connectivity / AMP	Automotive Connectors 2 X 4 150C BLK TPA-Locking Plate Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	17,852In Stock	$0.34 $0.288 $0.257 $0.25 View $0.235 $0.212 $0.201 $0.198 $0.197	Min.: 1 Mult.: 1
Headers & Wire Housings 12 Awg Tab contact 1971780-2 TE Connectivity / AMP 1: $0.19 27,116In Stock 30,000Expected 2027/03/22	Mfr. Part No. 1971780-2 Mouser Part No 571-1971780-2	TE Connectivity / AMP	Headers & Wire Housings 12 Awg Tab contact Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	27,116In Stock 30,000Expected 2027/03/22	Cut Tape $0.19 $0.16 $0.144 $0.137 Reel $0.097 View $0.122 $0.112 $0.092 $0.083	Min.: 1 Mult.: 1 : 2,500
Power to the Board 1x2 cap housing lgr free hanging Key A 5-1971772-2 TE Connectivity 1: $0.80 10,716In Stock	Mfr. Part No. 5-1971772-2 Mouser Part No 571-5-1971772-2	TE Connectivity	Power to the Board 1x2 cap housing lgr free hanging Key A Learn More about TE Connectivity te ptl connectors	Datasheet	10,716In Stock	$0.80 $0.683 $0.611 $0.554 View $0.511 $0.49 $0.448 $0.437 $0.411	Min.: 1 Mult.: 1
Power to the Board 1x3 cap housing lgr free hanging Key A 5-1971772-3 TE Connectivity 1: $0.85 21,671In Stock	Mfr. Part No. 5-1971772-3 Mouser Part No 571-5-1971772-3	TE Connectivity	Power to the Board 1x3 cap housing lgr free hanging Key A Learn More about TE Connectivity te ptl connectors	Datasheet	21,671In Stock	$0.85 $0.725 $0.647 $0.586 View $0.558 $0.542 $0.506 $0.481 $0.463	Min.: 1 Mult.: 1
Headers & Wire Housings 1 X 4 150C BLK TPA-Locking Plate 1971777-4 TE Connectivity / AMP 1: $0.32 6,482In Stock	Mfr. Part No. 1971777-4 Mouser Part No 571-1971777-4	TE Connectivity / AMP	Headers & Wire Housings 1 X 4 150C BLK TPA-Locking Plate Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	6,482In Stock	$0.32 $0.265 $0.233 $0.226 View $0.183 $0.17 $0.167 $0.158 $0.145	Min.: 1 Mult.: 1
Headers & Wire Housings 1 X 5 150C BLK TPA-Locking Plate 1971777-5 TE Connectivity / AMP 1: $0.33 2,794In Stock	Mfr. Part No. 1971777-5 Mouser Part No 571-1971777-5	TE Connectivity / AMP	Headers & Wire Housings 1 X 5 150C BLK TPA-Locking Plate Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	2,794In Stock	$0.33 $0.277 $0.248 $0.215 View $0.191 $0.174 $0.17 $0.158 $0.154	Min.: 1 Mult.: 1
Headers & Wire Housings 14 Awg Receptacle contact 1971781-2 TE Connectivity 4,000: $0.067 16,000In Stock 32,000On Order	Mfr. Part No. 1971781-2 Mouser Part No 571-1971781-2	TE Connectivity	Headers & Wire Housings 14 Awg Receptacle contact Learn More about TE Connectivity te ptl connectors	Datasheet	16,000In Stock 32,000On Order	Reel $0.067 $0.065	Min.: 4,000 Mult.: 4,000 : 4,000
Headers & Wire Housings 14 Awg Tab contact 1971782-2 TE Connectivity / AMP 4,000: $0.067 20,000In Stock	Mfr. Part No. 1971782-2 Mouser Part No 571-1971782-2	TE Connectivity / AMP	Headers & Wire Housings 14 Awg Tab contact Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	20,000In Stock	Reel $0.067 $0.063	Min.: 4,000 Mult.: 4,000 : 4,000
Headers & Wire Housings 16 20 Awg Tab contact 1971784-2 TE Connectivity / AMP 3,700: $0.058 14,800In Stock 29,600Expected 2026/10/27	Mfr. Part No. 1971784-2 Mouser Part No 571-1971784-2	TE Connectivity / AMP	Headers & Wire Housings 16 20 Awg Tab contact Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	14,800In Stock 29,600Expected 2026/10/27	Reel $0.058 $0.055 $0.053 $0.044 $0.041	Min.: 3,700 Mult.: 3,700 : 3,700

Power Triple Lock Connector System

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