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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 (EUR) Filter the results in the table by unit price based on your quantity.	Qty.
Headers & Wire Housings 1x2 plug housing lgr Key A 9-1971773-2 TE Connectivity 1: 0,705 € 42.000In Stock	Mfr. Part No. 9-1971773-2 Mouser Part No 571-9-1971773-2	TE Connectivity	Headers & Wire Housings 1x2 plug housing lgr Key A Learn More about TE Connectivity te ptl connectors	Datasheet	42.000In Stock	0,705 € 0,598 € 0,534 € 0,508 € View 0,454 € 0,427 € 0,399 € 0,388 € 0,378 €	Min.: 1 Mult.: 1
Headers & Wire Housings 1 X 2 150C BLK TPA-Locking Plate 1971777-2 TE Connectivity / AMP 1: 0,275 € 20.001In Stock 49.000Expected 11/9/2026	Mfr. Part No. 1971777-2 Mouser Part No 571-1971777-2	TE Connectivity / AMP	Headers & Wire Housings 1 X 2 150C BLK TPA-Locking Plate Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	20.001In Stock 49.000Expected 11/9/2026	0,275 € 0,23 € 0,206 € 0,196 € View 0,172 € 0,144 € 0,136 € 0,129 € 0,115 €	Min.: 1 Mult.: 1
Headers & Wire Housings 1 X 3 150C BLK TPA-Locking Plate 1971777-3 TE Connectivity / AMP 1: 0,37 € 13.002In Stock	Mfr. Part No. 1971777-3 Mouser Part No 571-1971777-3	TE Connectivity / AMP	Headers & Wire Housings 1 X 3 150C BLK TPA-Locking Plate Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	13.002In Stock	0,37 € 0,312 € 0,28 € 0,266 € View 0,237 € 0,222 € 0,209 € 0,20 € 0,192 €	Min.: 1 Mult.: 1
Headers & Wire Housings 16 20 Awg Receptacle contact 1971783-2 TE Connectivity 3.700: 0,04 € 81.400In 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	81.400In Stock	Reel 0,04 € 0,039 €	Min.: 3.700 Mult.: 3.700 : 3.700
Headers & Wire Housings 22 AWG PhosBr Rcpt Contact Terminal 1971785-1 TE Connectivity / AMP 4.400: 0,053 € 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 0,053 € 0,049 € 0,046 €	Min.: 4.400 Mult.: 4.400 : 4.400
Headers & Wire Housings CPA 1971789-1 TE Connectivity 1: 0,275 € 38.928In 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	38.928In Stock	0,275 € 0,231 € 0,206 € 0,183 € View 0,171 € 0,154 € 0,146 € 0,139 €	Min.: 1 Mult.: 1
Power to the Board 2x4 plug housing lgr Key A 5-1971776-4 TE Connectivity 1: 0,998 € 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	0,998 € 0,845 € 0,754 € 0,718 € View 0,673 € 0,641 € 0,587 € 0,57 € 0,538 €	Min.: 1 Mult.: 1
Power to the Board 1 x 2 PBT-A Cap Hsg Panel Mount 1-1971772-2 TE Connectivity / AMP 1: 0,654 € 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	0,654 € 0,558 € 0,482 € 0,452 € View 0,411 € 0,35 € 0,348 € 0,339 € 0,32 €	Min.: 1 Mult.: 1
Power to the Board 1 x 4 PBT-A Cap Hsg Panel Mount 1-1971772-4 TE Connectivity / AMP 1: 0,628 € 7.497In 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	7.497In Stock	0,628 € 0,531 € 0,475 € 0,434 € View 0,402 € 0,372 € 0,356 € 0,352 € 0,34 €	Min.: 1 Mult.: 1
Power to the Board 1 x 2 PBT-A Plug Hsg 1-1971773-2 TE Connectivity / AMP 1: 0,55 € 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	0,55 € 0,451 € 0,42 € 0,383 € View 0,329 € 0,304 € 0,288 € 0,282 € 0,274 €	Min.: 1 Mult.: 1
Power to the Board 1 x 3 PBT-A Plug Hsg 1-1971773-3 TE Connectivity / AMP 1: 0,568 € 11.144In 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	11.144In Stock	0,568 € 0,48 € 0,428 € 0,408 € View 0,362 € 0,327 € 0,30 € 0,294 €	Min.: 1 Mult.: 1
Power to the Board 1 x 4 PBT-A Plug Hsg 1-1971773-4 TE Connectivity / AMP 1: 0,568 € 15.400In 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	15.400In Stock	0,568 € 0,485 € 0,433 € 0,413 € View 0,368 € 0,334 € 0,317 € 0,316 € 0,311 €	Min.: 1 Mult.: 1
Power to the Board 2 x 4 PBT-A Cap Hsg Panel Mount 1-1971775-4 TE Connectivity / AMP 1: 0,714 € 4.112In Stock 17.200Expected 10/23/2026	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	4.112In Stock 17.200Expected 10/23/2026	0,714 € 0,604 € 0,539 € 0,513 € View 0,475 € 0,458 € 0,436 € 0,409 € 0,403 €	Min.: 1 Mult.: 1
Power to the Board 2 x 3 PBT-A Plug Hsg 1-1971776-3 TE Connectivity / AMP 1: 0,877 € 2.821In Stock	Mfr. Part No. 1-1971776-3 Mouser Part No 571-1-1971776-3	TE Connectivity / AMP	Power to the Board 2 x 3 PBT-A Plug Hsg Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	2.821In Stock	0,877 € 0,738 € 0,709 € 0,663 € View 0,553 € 0,527 € 0,501 € 0,474 € 0,429 €	Min.: 1 Mult.: 1
Headers & Wire Housings 3 x 4 PBT-A Plug Hsg 1-1971876-4 TE Connectivity / AMP 1: 0,894 € 3.015In Stock	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	3.015In Stock	0,894 € 0,757 € 0,676 € 0,667 € View 0,601 € 0,558 € 0,516 € 0,489 €	Min.: 1 Mult.: 1
Automotive Connectors 2 X 4 150C BLK TPA-Locking Plate 1971778-4 TE Connectivity / AMP 1: 0,292 € 17.952In 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	17.952In Stock	0,292 € 0,248 € 0,221 € 0,215 € View 0,202 € 0,182 € 0,173 € 0,17 € 0,169 €	Min.: 1 Mult.: 1
Headers & Wire Housings 12 Awg Tab contact 1971780-2 TE Connectivity / AMP 1: 0,163 € 28.166In Stock 30.000Expected 2/11/2027	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	28.166In Stock 30.000Expected 2/11/2027	Cut Tape 0,163 € 0,138 € 0,124 € 0,118 € Reel 0,083 € View 0,105 € 0,096 € 0,079 € 0,071 €	Min.: 1 Mult.: 1 : 2.500
Headers & Wire Housings 14 AWG Brass Pin Con Term Reel/4000 1971782-1 TE Connectivity / AMP 4.000: 0,046 € 40.000In Stock	Mfr. Part No. 1971782-1 Mouser Part No 571-1971782-1	TE Connectivity / AMP	Headers & Wire Housings 14 AWG Brass Pin Con Term Reel/4000 Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	40.000In Stock	Reel 0,046 € 0,044 € 0,042 € 0,04 € 0,035 €	Min.: 4.000 Mult.: 4.000 : 4.000
Power to the Board 1x2 cap housing lgr free hanging Key A 5-1971772-2 TE Connectivity 1: 0,688 € 10.766In 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	10.766In Stock	0,688 € 0,587 € 0,525 € 0,476 € View 0,439 € 0,421 € 0,385 € 0,376 € 0,353 €	Min.: 1 Mult.: 1
Power to the Board 1x4 cap housing lgr panel mount Key A 5-1971772-4 TE Connectivity 1: 0,748 € 9.997In Stock	Mfr. Part No. 5-1971772-4 Mouser Part No 571-5-1971772-4	TE Connectivity	Power to the Board 1x4 cap housing lgr panel mount Key A Learn More about TE Connectivity te ptl connectors	Datasheet	9.997In Stock	0,748 € 0,663 € 0,605 € 0,577 € View 0,541 € 0,515 € 0,485 € 0,463 €	Min.: 1 Mult.: 1
Headers & Wire Housings 1 X 4 150C BLK TPA-Locking Plate 1971777-4 TE Connectivity / AMP 1: 0,275 € 6.682In 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	6.682In Stock	0,275 € 0,236 € 0,211 € 0,201 € View 0,179 € 0,163 € 0,155 € 0,15 € 0,136 €	Min.: 1 Mult.: 1
Headers & Wire Housings 1 X 5 150C BLK TPA-Locking Plate 1971777-5 TE Connectivity / AMP 1: 0,284 € 2.894In 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	2.894In Stock	0,284 € 0,238 € 0,213 € 0,203 € View 0,181 € 0,176 € 0,159 € 0,141 € 0,138 €	Min.: 1 Mult.: 1
Headers & Wire Housings 14 Awg Receptacle contact 1971781-2 TE Connectivity 4.000: 0,058 € 16.000In Stock 32.000Expected 10/12/2026	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 32.000Expected 10/12/2026	Reel 0,058 € 0,057 €	Min.: 4.000 Mult.: 4.000 : 4.000
Headers & Wire Housings 14 Awg Tab contact 1971782-2 TE Connectivity / AMP 4.000: 0,058 € 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 0,058 €	Min.: 4.000 Mult.: 4.000 : 4.000
Headers & Wire Housings 16-20 AWG PhsBr Rcpt Con Term Reel/3700 1971783-1 TE Connectivity 3.700: 0,048 € 18.500In Stock 44.400Expected 10/23/2026	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	18.500In Stock 44.400Expected 10/23/2026	Reel 0,048 € 0,047 € 0,045 € 0,042 € 0,04 € 0,038 €	Min.: 3.700 Mult.: 3.700 : 3.700

Power Triple Lock Connector System

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