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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 16-20 AWG Brass Pin Con Term Reel/3700 1971784-1 TE Connectivity / AMP 3.700: 0,038 € 22.200In Stock 59.200Expected 10/20/2026	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	22.200In Stock 59.200Expected 10/20/2026	Reel 0,038 € 0,036 € 0,034 € 0,029 € 0,027 €	Min.: 3.700 Mult.: 3.700 : 3.700
Headers & Wire Housings 16 20 Awg Tab contact 1971784-2 TE Connectivity / AMP 3.700: 0,05 € 14.800In Stock	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	Reel 0,05 € 0,047 € 0,046 € 0,038 € 0,035 €	Min.: 3.700 Mult.: 3.700 : 3.700
Headers & Wire Housings 22 Awg Receptacle contact 1971785-2 TE Connectivity / AMP 4.400: 0,058 € 13.200In 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	13.200In Stock	Reel 0,058 € 0,057 €	Min.: 4.400 Mult.: 4.400 : 4.400
Heavy Duty Power Connectors PTL GROUND TAB CONTACT, 16-19 AWG 2232724-1 TE Connectivity / AMP 1: 0,146 € 2.964In 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	2.964In Stock	Cut Tape 0,146 € Reel 0,057 € 0,053 € 0,052 € 0,043 € 0,042 €	Min.: 1 Mult.: 1 : 3.700
Power to the Board 2x3 cap housing lgr panel mount Key A 5-1971775-3 TE Connectivity 1: 0,877 € 1.409In Stock	Mfr. Part No. 5-1971775-3 Mouser Part No 571-5-1971775-3	TE Connectivity	Power to the Board 2x3 cap housing lgr panel mount Key A Learn More about TE Connectivity te ptl connectors	Datasheet	1.409In Stock	0,877 € 0,742 € 0,637 € 0,608 € View 0,556 € 0,504 € 0,47 € 0,464 € 0,454 €	Min.: 1 Mult.: 1
Power to the Board 2x4 cap housing lgr panel mount Key A 5-1971775-4 TE Connectivity 1: 0,946 € 169In Stock	Mfr. Part No. 5-1971775-4 Mouser Part No 571-5-1971775-4	TE Connectivity	Power to the Board 2x4 cap housing lgr panel mount Key A Learn More about TE Connectivity te ptl connectors	Datasheet	169In Stock	0,946 € 0,807 € 0,72 € 0,685 € View 0,642 € 0,611 € 0,526 € 0,504 € 0,49 €	Min.: 1 Mult.: 1
Power to the Board 2x5 cap housing lgr panel mount Key A 5-1971775-5 TE Connectivity 1: 0,834 € 510In Stock	Mfr. Part No. 5-1971775-5 Mouser Part No 571-5-1971775-5	TE Connectivity	Power to the Board 2x5 cap housing lgr panel mount Key A Learn More about TE Connectivity te ptl connectors	Datasheet	510In Stock	0,834 € 0,712 € 0,636 € 0,605 € View 0,568 € 0,522 € 0,487 € 0,455 € 0,448 €	Min.: 1 Mult.: 1
Power to the Board 2x6 cap housing lgr panel mount Key A 5-1971775-6 TE Connectivity 1: 1,13 € 618In Stock	Mfr. Part No. 5-1971775-6 Mouser Part No 571-5-1971775-6	TE Connectivity	Power to the Board 2x6 cap housing lgr panel mount Key A Learn More about TE Connectivity te ptl connectors	Datasheet	618In Stock	1,13 € 0,955 € 0,824 € 0,776 € View 0,701 € 0,582 € 0,556 € 0,546 €	Min.: 1 Mult.: 1
Power to the Board 2x3 plug housing lgr Key A 5-1971776-3 TE Connectivity 1: 0,98 € 963In Stock	Mfr. Part No. 5-1971776-3 Mouser Part No 571-5-1971776-3	TE Connectivity	Power to the Board 2x3 plug housing lgr Key A Learn More about TE Connectivity te ptl connectors	Datasheet	963In Stock	0,98 € 0,836 € 0,746 € 0,71 € View 0,626 € 0,584 € 0,52 € 0,493 € 0,49 €	Min.: 1 Mult.: 1
Power to the Board 2x5 plug housing lgr Key A 5-1971776-5 TE Connectivity 1: 0,894 € 580In Stock	Mfr. Part No. 5-1971776-5 Mouser Part No 571-5-1971776-5	TE Connectivity	Power to the Board 2x5 plug housing lgr Key A Learn More about TE Connectivity te ptl connectors	Datasheet	580In Stock	0,894 € 0,758 € 0,677 € 0,613 € View 0,583 € 0,567 € 0,536 € 0,468 € 0,464 €	Min.: 1 Mult.: 1
Power to the Board 3x4 cap housing lgr panel mount Key A 5-1971875-4 TE Connectivity / AMP 1: 1,16 € 211In Stock	Mfr. Part No. 5-1971875-4 Mouser Part No 571-5-1971875-4	TE Connectivity / AMP	Power to the Board 3x4 cap housing lgr panel mount Key A Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	211In Stock	1,16 € 0,989 € 0,886 € 0,839 € View 0,786 € 0,709 € 0,668 € 0,659 € 0,617 €	Min.: 1 Mult.: 1
Headers & Wire Housings 3x4 plug housing lgr Key A 5-1971876-4 TE Connectivity 1: 1,08 € 456In Stock	Mfr. Part No. 5-1971876-4 Mouser Part No 571-5-1971876-4	TE Connectivity	Headers & Wire Housings 3x4 plug housing lgr Key A Learn More about TE Connectivity te ptl connectors	Datasheet	456In Stock	1,08 € 0,92 € 0,819 € 0,78 € View 0,731 € 0,69 € 0,60 € 0,568 € 0,554 €	Min.: 1 Mult.: 1
Headers & Wire Housings 3x5 plug housing lgr Key A 5-1971876-7 TE Connectivity 1: 1,26 € 398In Stock	Mfr. Part No. 5-1971876-7 Mouser Part No 571-5-1971876-7	TE Connectivity	Headers & Wire Housings 3x5 plug housing lgr Key A Learn More about TE Connectivity te ptl connectors	Datasheet	398In Stock	1,26 € 1,07 € 0,955 € 0,912 € View 0,838 € 0,773 € 0,71 € 0,697 € 0,661 €	Min.: 1 Mult.: 1
Heavy Duty Power Connectors PTL MFBL 1X3 CAP HOUSING PANEL MOUNT 5-2232353-3 TE Connectivity 1: 0,396 € 23In Stock 4.000Expected 10/5/2026	Mfr. Part No. 5-2232353-3 Mouser Part No 571-5-2232353-3	TE Connectivity	Heavy Duty Power Connectors PTL MFBL 1X3 CAP HOUSING PANEL MOUNT Learn More about TE Connectivity te ptl connectors	Datasheet	23In Stock 4.000Expected 10/5/2026	0,396 € 0,349 € 0,324 € 0,306 € View 0,28 € 0,244 € 0,233 € 0,225 € 0,223 €	Min.: 1 Mult.: 1
Heavy Duty Power Connectors PTL MFBL 1X3 PLUG HOUSING 5-2232362-3 TE Connectivity / AMP 1: 0,396 € 1.248In Stock 8.000Expected 11/23/2026	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	1.248In Stock 8.000Expected 11/23/2026	0,396 € 0,335 € 0,299 € 0,285 € View 0,255 € 0,242 € 0,224 € 0,217 € 0,211 €	Min.: 1 Mult.: 1
Power to the Board 2x5 cap housing panel mt Key A nat 1-1971775-5 TE Connectivity 1: 0,80 € 862In Stock	Mfr. Part No. 1-1971775-5 Mouser Part No 571-1-1971775-5	TE Connectivity	Power to the Board 2x5 cap housing panel mt Key A nat Learn More about TE Connectivity te ptl connectors	Datasheet	862In Stock	0,80 € 0,707 € 0,624 € 0,593 € View 0,577 € 0,55 € 0,494 € 0,47 € 0,458 €	Min.: 1 Mult.: 1
Power to the Board 2x6 cap housing panel mt Key A nat 1-1971775-6 TE Connectivity 1: 0,826 € 362In Stock 900Expected 1/25/2027	Mfr. Part No. 1-1971775-6 Mouser Part No 571-1-1971775-6	TE Connectivity	Power to the Board 2x6 cap housing panel mt Key A nat Learn More about TE Connectivity te ptl connectors	Datasheet	362In Stock 900Expected 1/25/2027	0,826 € 0,698 € 0,618 € 0,567 € View 0,529 € 0,513 € 0,467 € 0,438 €	Min.: 1 Mult.: 1
Power to the Board 2 x 4 PBT-A Plug Hsg 1-1971776-4 TE Connectivity / AMP 1: 0,791 € 1.293In Stock	Mfr. Part No. 1-1971776-4 Mouser Part No 571-1-1971776-4	TE Connectivity / AMP	Power to the Board 2 x 4 PBT-A Plug Hsg Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	1.293In Stock	0,791 € 0,685 € 0,623 € 0,58 € View 0,55 € 0,523 € 0,465 €	Min.: 1 Mult.: 1
Power to the Board 2x5 pulg housing Key A nat 1-1971776-5 TE Connectivity 1: 0,903 € 1.022In Stock	Mfr. Part No. 1-1971776-5 Mouser Part No 571-1-1971776-5	TE Connectivity	Power to the Board 2x5 pulg housing Key A nat Learn More about TE Connectivity te ptl connectors	Datasheet	1.022In Stock	0,903 € 0,762 € 0,732 € 0,597 € View 0,565 € 0,504 € 0,474 € 0,451 € 0,447 €	Min.: 1 Mult.: 1
Power to the Board 2x6 plug housing Key A nat 1-1971776-6 TE Connectivity 1: 0,593 € 1.967In Stock	Mfr. Part No. 1-1971776-6 Mouser Part No 571-1-1971776-6	TE Connectivity	Power to the Board 2x6 plug housing Key A nat Learn More about TE Connectivity te ptl connectors	Datasheet	1.967In Stock	0,593 € 0,574 € 0,488 € 0,466 € 0,449 €	Min.: 1 Mult.: 1
Headers & Wire Housings 3 x 5 PBT-A Plug Hsg 1-1971876-7 TE Connectivity / AMP 1: 1,03 € 711In Stock	Mfr. Part No. 1-1971876-7 Mouser Part No 571-1-1971876-7	TE Connectivity / AMP	Headers & Wire Housings 3 x 5 PBT-A Plug Hsg Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	711In Stock	1,03 € 0,886 € 0,785 € 0,747 € View 0,699 € 0,643 € 0,60 € 0,575 € 0,565 €	Min.: 1 Mult.: 1
Standard Circular Contacts 2X20 Awg Receptacle contact 1971237-2 TE Connectivity / AMP 1: 0,146 € 9.240In Stock	Mfr. Part No. 1971237-2 Mouser Part No 571-1971237-2	TE Connectivity / AMP	Standard Circular Contacts 2X20 Awg Receptacle contact Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	9.240In Stock	0,146 € 0,126 € 0,113 € 0,108 € View 0,096 € 0,074 € 0,066 € 0,065 € 0,064 €	Min.: 1 Mult.: 1
Automotive Connectors 2 x 6 locking plate black 1971778-6 TE Connectivity 1: 0,335 € 868In Stock	Mfr. Part No. 1971778-6 Mouser Part No 571-1971778-6	TE Connectivity	Automotive Connectors 2 x 6 locking plate black Learn More about TE Connectivity te ptl connectors	Datasheet	868In Stock	0,335 € 0,286 € 0,255 € 0,243 € View 0,21 € 0,20 € 0,189 € 0,187 €	Min.: 1 Mult.: 1
Heavy Duty Power Connectors PTL MFBL RECEPTACLE CONTACT, 16-19 AWG 2232723-1 TE Connectivity / AMP 3.700: 0,058 € 14.800In Stock	Mfr. Part No. 2232723-1 Mouser Part No 571-2232723-1	TE Connectivity / AMP	Heavy Duty Power Connectors PTL MFBL RECEPTACLE CONTACT, 16-19 AWG Learn More about TE Connectivity / AMP te ptl connectors	Datasheet	14.800In Stock	Reel 0,058 € 0,054 € 0,052 € 0,048 € 0,046 €	Min.: 3.700 Mult.: 3.700 : 3.700
Headers & Wire Housings POWER DBL LOCK CAP HSG P/M 2P GWT 5-177906-1 TE Connectivity 1: 0,396 € 1.322In Stock	Mfr. Part No. 5-177906-1 Mouser Part No 571-5-177906-1	TE Connectivity	Headers & Wire Housings POWER DBL LOCK CAP HSG P/M 2P GWT Learn More about TE Connectivity te ptl connectors	Datasheet	1.322In Stock	0,396 € 0,363 € 0,344 € 0,324 € View 0,294 € 0,252 € 0,217 € 0,212 € 0,209 €	Min.: 1 Mult.: 1

Power Triple Lock Connector System

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