Phoenix Contact 1020066 Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1020066 is a thermal magnetic circuit breaker rated for 6A with dual voltage capability (277V AC / 125V DC). This DIN rail-mounted device features a lever actuator and is designed for two-pole protection applications. The part is currently active in production with 1121 units in stock. Finding equivalent substitute parts is necessary to ensure supply chain continuity, manage inventory across multiple warehouses, or accommodate regional availability constraints.

Substiute Parts

1020066

Phoenix ContactIn Stock: 11691020066 Datasheet

Current PartRFQ

1019999

Phoenix ContactIn Stock: 11441019999 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 1020066 is determined by strict equivalence across the following critical parameters:

• Current Rating: 6A (exact match required)
• Voltage Rating - AC: 277V (exact match required)
• Voltage Rating - DC: 125V (exact match required)
• Breaker Type: Thermal Magnetic (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Actuator Type: Lever (exact match required)
• Number of Poles: 2 (exact match required)
• Series: TMC 7 (same product family)

The substitute part 1019999 meets all electrical and mechanical parameters required for direct substitution in applications currently using the 1020066.

Parameter Comparison

Engineering Selection Recommendations

Both the 1020066 and 1019999 are active production parts from Phoenix Contact with ROHS3 compliance. The 1019999 carries REACH Affected status, while the 1020066 is REACH Unaffected. This distinction may be relevant for applications subject to REACH regulatory requirements. Both parts share identical electrical ratings, mechanical configuration, and DIN rail mounting specifications. Selection between these parts should be based on regulatory compliance requirements specific to the end application and regional deployment.

Frequently Asked Questions (FAQ)

Q: Can the 1019999 be used as a direct replacement for the 1020066?

A: Yes. Both parts are identical in current rating (6A), voltage ratings (277V AC / 125V DC), breaker type (thermal magnetic), mounting configuration (DIN rail), actuator type (lever), and pole count (2). They belong to the same TMC 7 series and are mechanically and electrically interchangeable.

Q: What is the difference between these two parts?

A: The primary difference is REACH regulatory status. The 1020066 is REACH Unaffected, while the 1019999 is REACH Affected. Both maintain ROHS3 compliance. This distinction is relevant only for applications subject to REACH regulations in specific jurisdictions.

Q: Are there any packaging or mounting differences?

A: No. Both parts use identical DIN rail mounting and are supplied in box packaging. Physical dimensions and installation procedures are identical.

Q: Which part should I select for new designs?

A: Selection depends on the regulatory environment of the end application. For applications not subject to REACH restrictions, either part is suitable. For applications requiring REACH Unaffected status, specify the 1020066.

Q: Is inventory availability a factor in substitution?

A: Inventory levels may influence procurement decisions. The 1020066 has 1121 units in stock, while the 1019999 has 1058 units available. Both maintain adequate stock for standard lead times.