Phoenix Contact 1975781 Terminal Block Plug - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1975781 is an 11-position terminal block plug with female sockets, 0.300" (7.62mm) pitch, designed for 180° free-hanging in-line applications. This component features screw-rising cage clamp termination, supporting wire gauges from 8-24 AWG (0.2-10mm²) with IEC ratings of 41A at 1 kV and UL ratings of 41A at 600V. The part is classified as obsolete, making identification of active equivalent components essential for ongoing procurement and system maintenance.

Key Parameters

Parameter	Value
Number of Positions	11
Pitch	0.300" (7.62mm)
Plug Wire Entry	180°
Termination Style	Screw - Rising Cage Clamp
Mounting Type	Free Hanging (In-Line)
Current Rating (IEC)	41A
Voltage Rating (IEC)	1 kV
Wire Gauge Range	8-24 AWG (0.2-10mm²)
Housing Material	Polyamide (PA), Nylon
Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

The Phoenix Contact 1777927 qualifies as a direct substitute for the 1975781 based on the following critical parameters:

Electrical Compatibility: Both parts maintain identical IEC current (41A) and voltage (1 kV) ratings, as well as UL current (41A) and voltage (600V) ratings
Mechanical Compatibility: Both feature 11 positions at 0.300" (7.62mm) pitch with 180° wire entry and free-hanging in-line mounting
Termination Compatibility: Both use screw-rising cage clamp termination with M3 screw size
Wire Gauge Compatibility: Both accept 8-24 AWG (0.2-10mm²) wire gauges
Material and Compliance: Both use polyamide (PA) nylon housing with UL94 V-0 flammability rating and RoHS compliance

The primary distinction is product status: the 1975781 is obsolete while the 1777927 is active, with enhanced features including retention latches on the non-wire side.

Parameter Comparison

Parameter	1975781 (Main Part)	1777927 (Substitute)
Manufacturer	Phoenix Contact	Phoenix Contact
Series	COMBICON PC	COMBICON PC
Product Status	Obsolete	Active
Number of Positions	11	11
Pitch	0.300" (7.62mm)	0.300" (7.62mm)
Plug Wire Entry	180°	180°
Termination Style	Screw - Rising Cage Clamp	Screw - Rising Cage Clamp
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)
Current - IEC	41A	41A
Voltage - IEC	1 kV	1 kV
Current - UL	41A	41A
Voltage - UL	600V	600V
Wire Gauge - AWG	8-24 AWG	8-24 AWG
Wire Gauge - mm²	0.2-10mm²	0.2-10mm²
Screw Size	M3	M3
Torque - Screw	0.7-0.8 Nm (6.2-7.1 Lb-In)	0.5-0.8 Nm (4.4-7.1 Lb-In)
Wire Strip Length	10mm	10mm
Housing Material	Polyamide (PA), Nylon	Polyamide (PA), Nylon
Flammability Rating	UL94 V-0	UL94 V-0
RoHS Status	RoHS Compliant	RoHS Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)
Insulation Height	0.902" (22.90mm)	0.776" (19.70mm)

Engineering Selection Recommendations

The Phoenix Contact 1777927 is the direct active equivalent for the obsolete 1975781. Both components are certified to identical electrical and mechanical specifications within the COMBICON PC series. The 1777927 maintains full compatibility across all critical parameters: 11-position configuration, 0.300" pitch, 41A/1 kV IEC ratings, 41A/600V UL ratings, and 8-24 AWG wire gauge acceptance.

The 1777927 is recommended for new designs and replacement applications due to its active product status and enhanced feature set, including retention latches on the non-wire side. Both parts carry RoHS compliance and UL94 V-0 flammability certification, meeting current regulatory requirements.

The minor variation in insulation height (0.902" versus 0.776") and screw torque range (0.7-0.8 Nm versus 0.5-0.8 Nm) does not affect functional substitution in standard applications. The torque specification for the 1777927 encompasses the original specification range, ensuring compatibility with existing assembly procedures.

Frequently Asked Questions (FAQ)

Q: Can the 1777927 directly replace the 1975781 in existing installations?

A: Yes. Both components share identical electrical ratings (41A/1 kV IEC, 41A/600V UL), mechanical configuration (11 positions at 0.300" pitch), and termination method (screw-rising cage clamp). The 1777927 is mechanically and electrically interchangeable.

Q: What is the significance of the retention latches on the 1777927?

A: The retention latches on the non-wire side of the 1777927 provide mechanical locking during mating operations. This is an enhancement over the 1975781 and does not affect substitution compatibility.

Q: Are there packaging differences between these parts?

A: The 1975781 is listed with unspecified packaging, while the 1777927 is supplied in bulk packaging. Both are available in new original condition with substantial inventory levels (927 pcs and 979 pcs respectively).

Q: Do the screw torque specifications differ significantly?

A: The 1975781 specifies 0.7-0.8 Nm torque, while the 1777927 specifies 0.5-0.8 Nm. The 1777927 range encompasses the original specification, maintaining compatibility with existing assembly torque procedures.

Q: Are both parts RoHS and UL compliant?

A: Yes. Both the 1975781 and 1777927 are RoHS compliant and carry UL94 V-0 flammability certification. Both maintain MSL rating 1 (unlimited moisture sensitivity level).

Q: What wire gauges are supported by both components?

A: Both parts accept 8-24 AWG (0.2-10mm²) wire gauges with identical screw-rising cage clamp termination and M3 screw size.

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