Phoenix Contact 1755729 Terminal Block Plug - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1755729 is a 16-position terminal block plug designed for unshrouded headers with 5.00mm pitch spacing and 90° wire entry orientation. This component is classified as a screw-terminal connector with rising cage clamp termination, suitable for free-hanging inline mounting applications. The part maintains active product status with 1009 units in current inventory stock.

Equivalent and substitute parts are identified when design requirements permit tolerance of minor parameter variations, such as pitch tolerance (5.00mm to 5.08mm), wire entry angle modifications (90° to 180°), or termination method changes (rising cage clamp to clamping yoke), while maintaining core electrical and mechanical compatibility within the application's design envelope.

Key Parameters

Parameter	Value
Manufacturer Part Number	1755729
Manufacturer	Phoenix Contact
Category	Terminal Blocks
Number of Positions	16
Pitch	0.197" (5.00mm)
Plug Wire Entry	90°
Termination Style	Screw - Rising Cage Clamp
Mounting Type	Free Hanging (In-Line)
Current - IEC	10A
Voltage - IEC	630 V
Current - UL	10 A
Voltage - UL	300 V
Wire Gauge Range - AWG	14-28 AWG
Wire Gauge Range - mm²	0.2-2.5mm²
Housing Material	Polyamide (PA), Nylon
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the Phoenix Contact 1755729 are grouped based on the following substitution criteria:

Core Compatibility Parameters:

16-position configuration (mandatory)
Pitch tolerance: 5.00mm (primary) to 5.08mm (acceptable variance)
Free-hanging inline mounting (mandatory)
Screw-based termination with cage clamp or clamping yoke mechanism (functionally equivalent)
Wire gauge accommodation: minimum 14 AWG (0.2mm²) to maximum 28 AWG (2.5mm²)
Voltage rating: minimum 300V UL or 400V IEC
Current rating: minimum 10A UL or equivalent IEC rating

Acceptable Parameter Variations:

Wire entry angle: 90° (primary) or 180° (acceptable for applications permitting straight-in wire routing)
Termination mechanism: Rising cage clamp or clamping yoke (tension sleeve) both provide equivalent screw-terminal functionality
Housing material: Polyamide (PA) or Polybutylene Terephthalate (PBT) both meet UL94 V-0 flammability requirements
Operating temperature range: -40°C to 115°C (Molex) or -50°C to 100°C (Weidmüller) both accommodate standard industrial environments

Non-Substitutable Parameters:

Number of positions (must remain 16)
Mounting type (must remain free-hanging inline)
Connector type (must remain plug with female sockets)

Parameter Comparison

Parameter	Phoenix Contact 1755729	Molex 0395300116	Molex 0395305116	Weidmüller 1948380000	Weidmüller 1949940000
Number of Positions	16	16	16	16	16
Pitch	5.00mm	5.08mm	5.08mm	5.08mm	5.08mm
Wire Entry Angle	90°	180°	180°	90°	90°
Termination Style	Screw - Rising Cage Clamp	Screw - Rising Cage Clamp	Screw - Rising Cage Clamp	Screw - Clamping Yoke	Screw - Clamping Yoke
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Current - UL	10 A	15 A	15 A	20 A	20 A
Voltage - UL	300 V	300 V	300 V	300 V	300 V
Wire Gauge Range - AWG	14-28 AWG	12-26 AWG	12-26 AWG	12-30 AWG	12-30 AWG
Housing Material	Polyamide (PA), Nylon	Polyamide (PA), Nylon	Polyamide (PA), Nylon	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)
Material Flammability Rating	UL94 V-0	Not specified	Not specified	UL94 V-0	UL94 V-0
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Substitution (90° Wire Entry, Matching Orientation):

Weidmüller 1948380000 and 1949940000 provide the closest functional equivalence to the Phoenix Contact 1755729, maintaining 90° wire entry orientation. Both parts are active products with RoHS compliance and UL94 V-0 flammability certification. The Weidmüller series accommodates expanded wire gauge ranges (12-30 AWG versus 14-28 AWG) and provides higher current ratings (20A UL versus 10A UL), making them suitable for applications with equivalent or reduced current demands. The clamping yoke termination mechanism provides functionally equivalent screw-terminal performance to the rising cage clamp design.

Conditional Substitution (180° Wire Entry, Straight-In Routing):

Molex 0395300116 and 0395305116 are suitable substitutes only when application design permits 180° straight-in wire entry routing instead of 90° angled entry. Both parts maintain 16-position configuration, free-hanging inline mounting, and rising cage clamp termination identical to the main part. Current ratings of 15A UL exceed the 10A requirement. ROHS3 compliance status meets regulatory requirements. The primary design consideration is wire entry angle compatibility with the application's physical layout and connector orientation.

Inventory and Availability:

All substitute parts maintain active product status with current inventory availability: Molex 0395300116 (1136 units), Molex 0395305116 (1112 units), Weidmüller 1948380000 (978 units), and Weidmüller 1949940000 (785 units).

Frequently Asked Questions (FAQ)

Q: Can Molex 0395300116 or 0395305116 be used as direct replacements for the Phoenix Contact 1755729?

A: These Molex parts are functionally equivalent only if the application design accommodates 180° straight-in wire entry instead of 90° angled entry. The pitch difference (5.08mm versus 5.00mm) falls within acceptable mechanical tolerance for unshrouded header compatibility. Both parts provide equivalent electrical performance with 15A UL current rating and 300V UL voltage rating.

Q: What is the pitch tolerance between 5.00mm and 5.08mm?

A: The 0.08mm pitch variance (approximately 0.3% tolerance) is within standard mechanical tolerance for terminal block connectors and unshrouded header compatibility. This variance does not affect electrical performance or mating reliability.

Q: Are the Weidmüller 1948380000 and 1949940000 parts interchangeable?

A: Both Weidmüller parts share identical electrical specifications, termination style, and wire entry angle (90°). The primary differences are packaging (box versus bulk) and housing color (black versus orange). The 1949940000 includes a mating flange feature and increased insulation height (27.20mm versus 14.10mm). Selection depends on application space constraints and mounting requirements.

Q: Does the clamping yoke termination in Weidmüller parts provide equivalent performance to the rising cage clamp in Phoenix Contact?

A: Both termination mechanisms are screw-based cage clamp designs providing equivalent wire retention and electrical contact performance. The clamping yoke (tension sleeve) design in Weidmüller parts offers functionally equivalent screw-terminal operation suitable for applications currently using rising cage clamp termination.

Q: What wire gauge compatibility should be verified during substitution?

A: The Phoenix Contact 1755729 accommodates 14-28 AWG (0.2-2.5mm²). Substitute parts accommodate expanded ranges: Molex parts support 12-26 AWG, and Weidmüller parts support 12-30 AWG. Verify that the specific wire gauges used in the application fall within the substitute part's rated range. Weidmüller parts accommodate larger wire gauges (up to 30 AWG) than the original specification.

Q: Are all substitute parts RoHS compliant?

A: Yes. Phoenix Contact 1755729 is RoHS Compliant. Molex 0395300116 and 0395305116 are ROHS3 Compliant. Weidmüller 1948380000 and 1949940000 are RoHS Compliant. All parts meet current regulatory requirements.

Q: What is the operating temperature range for each substitute part?

A: Phoenix Contact 1755729 does not specify an operating temperature range. Molex parts operate -40°C to 115°C. Weidmüller parts operate -50°C to 100°C. Both ranges accommodate standard industrial environments and exceed typical application requirements.

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