Phoenix Contact 1770403 Terminal Block - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1770403 is a 3-position wire-to-board terminal block with side entry, 10mm pitch, and through-hole mounting. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The part operates at 51A current capacity and 300V voltage rating with screwless spring cage termination and lever actuation.

Substiute Parts

1770403

Phoenix ContactIn Stock: 10091770403 Datasheet

Current PartRFQ

1119811

Phoenix ContactIn Stock: 9811119811 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 1770403 is determined by the following critical parameters:

• Electrical Compatibility: Positions per level (3), pitch (10.00mm), current rating (51A minimum), and voltage rating (300V minimum)
• Mechanical Compatibility: Mating orientation (horizontal with board), mounting type (through hole), and wire gauge acceptance range
• Termination Method: Wire termination technology must support the same wire gauges and current capacity
• Form Factor: Housing material and color consistency for mechanical fit and assembly standardization

The substitute part Phoenix Contact 1119811 maintains these critical parameters while offering active product status and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 1119811 serves as a direct substitute for the obsolete 1770403 based on the following engineering criteria:

Electrical Equivalence: Both parts maintain 3-position configuration at 10mm pitch with through-hole mounting. The 1119811 accepts wire gauges from 4-18 AWG, which encompasses the 1770403 specification of 6-18 AWG, providing backward compatibility.

Compliance Status: The 1119811 holds active product status with ROHS3 compliance, ensuring continued availability and regulatory alignment. The 1770403, while RoHS compliant, is obsolete and subject to supply discontinuation.

Operational Advantages: The 1119811 provides specified operating temperature range (-40°C ~ 105°C) and contact material specification (Copper Alloy - Tin Plated), offering enhanced environmental performance documentation compared to the 1770403.

Termination Compatibility: Both employ screwless spring-based wire termination with lever actuation. The 1119811 uses leg spring and push-in spring technology versus the 1770403 tension clamp approach, both suitable for the specified wire gauge range and current capacity.

Frequently Asked Questions (FAQ)

Q: Can the 1119811 directly replace the 1770403 in existing PCB designs?

A: Yes. Both parts share identical pitch (10mm), position count (3), mating orientation (horizontal with board), and through-hole mounting footprint. PCB layout compatibility is maintained.

Q: What is the wire gauge difference between these parts?

A: The 1770403 accepts 6-18 AWG wire. The 1119811 accepts 4-18 AWG wire. The 1119811 supports a wider range, including smaller gauge conductors, while maintaining full compatibility with the original specification range.

Q: Are the termination methods interchangeable?

A: Both employ screwless spring-based termination with lever actuation. The 1770403 uses tension clamp technology while the 1119811 uses leg spring and push-in spring technology. Both methods are suitable for the specified current and voltage ratings and wire gauge ranges.

Q: What is the significance of the product status change from Obsolete to Active?

A: Active product status ensures continued manufacturing, availability, and technical support. The 1119811 is recommended for new designs and ongoing production to avoid supply chain disruption associated with obsolete components.

Q: Are there packaging differences between these parts?

A: The 1770403 packaging is not specified. The 1119811 is supplied in box packaging. Verify packaging requirements for your procurement and assembly processes.

Q: Do both parts meet current regulatory requirements?

A: The 1770403 is RoHS Compliant. The 1119811 is ROHS3 Compliant, representing the current regulatory standard. Both meet EAR99 export classification and 8536.90.4000 HTSUS code requirements.