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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 € 42.001In Stock	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	42.001In Stock	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 € 13.752In 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	13.752In 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 € 39.026In 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	39.026In Stock	0,275 € 0,231 € 0,206 € 0,197 € View 0,175 € 0,168 € 0,157 € 0,148 € 0,145 €	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 € 5.628In 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	5.628In 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 € 7.521In 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	7.521In Stock	0,628 € 0,531 € 0,475 € 0,434 € View 0,402 € 0,378 € 0,358 € 0,352 € 0,344 €	Min.: 1 Mult.: 1
Power to the Board 1 x 2 PBT-A Plug Hsg 1-1971773-2 TE Connectivity / AMP 1: 0,55 € 16.003In 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	16.003In 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 € 11.994In 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	11.994In Stock	0,568 € 0,48 € 0,428 € 0,408 € View 0,363 € 0,328 € 0,30 € 0,293 € 0,288 €	Min.: 1 Mult.: 1
Power to the Board 1 x 4 PBT-A Plug Hsg 1-1971773-4 TE Connectivity / AMP 1: 0,568 € 15.600In 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	15.600In Stock	0,568 € 0,485 € 0,433 € 0,413 € View 0,368 € 0,321 € 0,318 € 0,315 €	Min.: 1 Mult.: 1
Power to the Board 2 x 3 PBT-A Cap Hsg Panel Mount 1-1971775-3 TE Connectivity / AMP 1: 0,722 € 3.459In Stock	Mfr. Part No. 1-1971775-3 Mouser Part No 571-1-1971775-3	TE Connectivity / AMP	Power to the Board 2 x 3 PBT-A Cap Hsg Panel Mount Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	3.459In Stock	0,722 € 0,612 € 0,546 € 0,49 € View 0,452 € 0,418 € 0,406 € 0,362 €	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 € 4.312In 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	4.312In 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 € 3.095In 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	3.095In 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 € 3.865In 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	3.865In Stock	0,894 € 0,757 € 0,676 € 0,667 € View 0,601 € 0,558 € 0,516 €	Min.: 1 Mult.: 1
Automotive Connectors 2 X 4 150C BLK TPA-Locking Plate 1971778-4 TE Connectivity / AMP 1: 0,292 € 18.152In 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	18.152In 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 14 AWG Brass Pin Con Term Reel/4000 1971782-1 TE Connectivity / AMP 4.000: 0,046 € 44.000In 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	44.000In 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 € 9.995In 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	9.995In 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 € 6.680In 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	6.680In Stock	0,275 € 0,236 € 0,211 € 0,201 € View 0,179 € 0,163 € 0,155 € 0,151 € 0,134 €	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 € 36.000In 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	36.000In 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 € 22.200In Stock 44.400Expected 10/5/2026	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	22.200In Stock 44.400Expected 10/5/2026	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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