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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 (GBP) 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: £0.042 99,900In Stock	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	99,900In Stock	Reel £0.042 £0.041 £0.039 £0.037 £0.035 £0.033	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: £0.033 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 £0.033 £0.031 £0.03 £0.025 £0.024	Min.: 3,700 Mult.: 3,700 : 3,700
Headers & Wire Housings 22 AWG PhosBr Rcpt Contact Terminal 1971785-1 TE Connectivity / AMP 4,400: £0.046 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 £0.046 £0.043 £0.04	Min.: 4,400 Mult.: 4,400 : 4,400
Headers & Wire Housings CPA 1971789-1 TE Connectivity 1: £0.24 36,310In 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	36,310In Stock	£0.24 £0.202 £0.18 £0.16 View £0.142 £0.122 £0.115 £0.114	Min.: 1 Mult.: 1
Power to the Board 2x4 plug housing lgr Key A 5-1971776-4 TE Connectivity 1: £0.871 3,428In 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	3,428In Stock	£0.871 £0.738 £0.658 £0.627 View £0.588 £0.491 £0.475 £0.458	Min.: 1 Mult.: 1
Heavy Duty Power Connectors PTL MFBL 1X3 PLUG HOUSING 5-2232362-3 TE Connectivity / AMP 1: £0.346 9,248In Stock	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	9,248In Stock	£0.346 £0.292 £0.261 £0.249 View £0.223 £0.211 £0.196 £0.189 £0.18	Min.: 1 Mult.: 1
Power to the Board 1 x 2 PBT-A Cap Hsg Panel Mount 1-1971772-2 TE Connectivity / AMP 1: £0.571 4,350In 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	4,350In Stock	£0.571 £0.487 £0.421 £0.395 View £0.359 £0.306 £0.304 £0.296 £0.282	Min.: 1 Mult.: 1
Power to the Board 1 x 3 PBT-A Cap Hsg Panel Mount 1-1971772-3 TE Connectivity / AMP 1: £0.586 17,351In 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	17,351In Stock	£0.586 £0.498 £0.445 £0.409 View £0.362 £0.319 £0.313 £0.31	Min.: 1 Mult.: 1
Power to the Board 1 x 4 PBT-A Cap Hsg Panel Mount 1-1971772-4 TE Connectivity / AMP 1: £0.548 7,173In 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	7,173In Stock	£0.548 £0.464 £0.415 £0.379 View £0.351 £0.325 £0.311 £0.307 £0.297	Min.: 1 Mult.: 1
Power to the Board 1 x 2 PBT-A Plug Hsg 1-1971773-2 TE Connectivity / AMP 1: £0.48 15,533In 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	15,533In Stock	£0.48 £0.395 £0.367 £0.335 View £0.287 £0.265 £0.251 £0.247 £0.239	Min.: 1 Mult.: 1
Power to the Board 1 x 3 PBT-A Plug Hsg 1-1971773-3 TE Connectivity / AMP 1: £0.496 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	£0.496 £0.419 £0.374 £0.356 View £0.316 £0.285 £0.262 £0.257	Min.: 1 Mult.: 1
Power to the Board 1 x 4 PBT-A Plug Hsg 1-1971773-4 TE Connectivity / AMP 1: £0.488 15,165In 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	15,165In Stock	£0.488 £0.423 £0.378 £0.361 View £0.321 £0.292 £0.277 £0.275 £0.271	Min.: 1 Mult.: 1
Automotive Connectors 2 X 4 150C BLK TPA-Locking Plate 1971778-4 TE Connectivity / AMP 1: £0.255 17,751In 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	17,751In Stock	£0.255 £0.217 £0.193 £0.177 View £0.164 £0.149 £0.137 £0.132	Min.: 1 Mult.: 1
Headers & Wire Housings 12 Awg Tab contact 1971780-2 TE Connectivity / AMP 1: £0.142 27,116In Stock 30,000Expected 13/11/2026	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 13/11/2026	Cut Tape £0.142 £0.12 £0.108 £0.103 Reel £0.075 View £0.092 £0.084 £0.073 £0.07	Min.: 1 Mult.: 1 : 2,500
Headers & Wire Housings 16 20 Awg Receptacle contact 1971783-2 TE Connectivity 3,700: £0.037 74,000In 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	74,000In Stock	Reel £0.037 £0.036 £0.035	Min.: 3,700 Mult.: 3,700 : 3,700
Power to the Board 1x2 cap housing lgr free hanging Key A 5-1971772-2 TE Connectivity 1: £0.601 10,299In 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	10,299In Stock	£0.601 £0.512 £0.458 £0.416 View £0.383 £0.37 £0.335 £0.326 £0.308	Min.: 1 Mult.: 1
Power to the Board 1x3 cap housing lgr free hanging Key A 5-1971772-3 TE Connectivity 1: £0.638 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	£0.638 £0.544 £0.485 £0.44 View £0.419 £0.407 £0.38 £0.361 £0.347	Min.: 1 Mult.: 1
Power to the Board 1x3 plug housing dgr Key A 5-2232265-3 TE Connectivity 1: £0.593 8,969In Stock	Mfr. Part No. 5-2232265-3 Mouser Part No 571-5-2232265-3	TE Connectivity	Power to the Board 1x3 plug housing dgr Key A Learn More about TE Connectivity te ptl connectors	Datasheet	8,969In Stock	£0.593 £0.504 £0.45 £0.40 View £0.371 £0.363 £0.34 £0.336 £0.32	Min.: 1 Mult.: 1
Headers & Wire Housings 1 X 4 150C BLK TPA-Locking Plate 1971777-4 TE Connectivity / AMP 1: £0.24 6,382In 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	6,382In Stock	£0.24 £0.206 £0.177 £0.165 View £0.141 £0.127 £0.12 £0.117 £0.11	Min.: 1 Mult.: 1
Headers & Wire Housings 1 X 5 150C BLK TPA-Locking Plate 1971777-5 TE Connectivity / AMP 1: £0.248 2,744In 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	2,744In Stock	£0.248 £0.208 £0.186 £0.169 View £0.154 £0.137 £0.122 £0.12	Min.: 1 Mult.: 1
Headers & Wire Housings 14 Awg Tab contact 1971782-2 TE Connectivity / AMP 4,000: £0.052 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 £0.052 £0.051	Min.: 4,000 Mult.: 4,000 : 4,000
Headers & Wire Housings 16 20 Awg Tab contact 1971784-2 TE Connectivity / AMP 3,700: £0.044 14,800In Stock 29,600Expected 13/11/2026	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 13/11/2026	Reel £0.044 £0.041 £0.04 £0.033 £0.031	Min.: 3,700 Mult.: 3,700 : 3,700
Headers & Wire Housings 22 Awg Receptacle contact 1971785-2 TE Connectivity / AMP 4,400: £0.052 8,800In Stock	Mfr. Part No. 1971785-2 Mouser Part No 571-1971785-2	TE Connectivity / AMP	Headers & Wire Housings 22 Awg Receptacle contact Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	8,800In Stock	Reel £0.052 £0.05	Min.: 4,400 Mult.: 4,400 : 4,400
Headers & Wire Housings 2X18 Awg Tab contact 1971788-2 TE Connectivity / AMP 1: £0.188 677In Stock	Mfr. Part No. 1971788-2 Mouser Part No 571-1971788-2	TE Connectivity / AMP	Headers & Wire Housings 2X18 Awg Tab contact Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	677In Stock	Cut Tape £0.188 £0.148 £0.122 £0.11 Reel £0.06 View £0.094 £0.065 £0.058 £0.057	Min.: 1 Mult.: 1 : 2,200
Heavy Duty Power Connectors PTL GROUND TAB CONTACT, 16-19 AWG 2232724-1 TE Connectivity / AMP 1: £0.127 2,954In Stock	Mfr. Part No. 2232724-1 Mouser Part No 571-2232724-1	TE Connectivity / AMP	Heavy Duty Power Connectors PTL GROUND TAB CONTACT, 16-19 AWG Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	2,954In Stock	Cut Tape £0.127 Reel £0.05 £0.046 £0.045 £0.038 £0.037	Min.: 1 Mult.: 1 : 3,700

Power Triple Lock Connector System

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Power Triple Lock Connector System

Types of Connectors

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