IEG666-0-SW-50.0-A-01-V Equivalent & Substitute Parts

Part Overview

The IEG666-0-SW-50.0-A-01-V is a three-pole circuit breaker with magnetic-hydraulic delay protection manufactured by Sensata-Airpax. This component is rated for 50A at 250V AC and 80V DC, featuring lever-actuated panel mount operation. The product is currently active in production with full compliance to CSA, TUV, and UL1077 standards. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

IEG666-0-SW-50.0-A-01-V

Sensata-AirpaxIn Stock: 938IEG666-0-SW-50.0-A-01-V Datasheet

Current PartRFQ

IEGH666-0-SW-50.0-01-V

Sensata Technologies – AirpaxIn Stock: 898IEGH666-0-SW-50.0-01-V Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IEG666-0-SW-50.0-A-01-V is determined by strict equivalence across the following critical parameters:

• Current Rating: 50A
• Voltage Rating (AC): 250V
• Voltage Rating (DC): 80V
• Breaker Type: Magnetic (Hydraulic Delay)
• Number of Poles: 3
• Actuator Type: Lever
• Mounting Type: Panel Mount
• Approval Agencies: CSA, TUV, UL1077

The identified substitute part maintains identical electrical and mechanical specifications, ensuring direct functional compatibility in applications requiring this circuit breaker configuration.

Parameter Comparison

Engineering Selection Recommendations

Both the IEG666-0-SW-50.0-A-01-V and IEGH666-0-SW-50.0-01-V are active products with identical electrical and mechanical specifications. Selection between these parts may be based on inventory availability and procurement lead times. Both components carry full compliance certifications (CSA, TUV, UL1077) and RoHS compliance status, making either suitable for applications requiring regulatory adherence. The IEGH666-0-SW-50.0-01-V represents a parametric equivalent with no functional or performance differentiation from the primary part number.

Frequently Asked Questions (FAQ)

Q: Can IEGH666-0-SW-50.0-01-V be used as a direct replacement for IEG666-0-SW-50.0-A-01-V?

A: Yes. Both parts are identical in current rating (50A), voltage ratings (250V AC / 80V DC), breaker type (magnetic-hydraulic delay), pole configuration (3-pole), actuator type (lever), mounting method (panel mount), and regulatory approvals (CSA, TUV, UL1077).

Q: Are there any differences in physical dimensions or mounting footprint?

A: No dimensional or mounting differences are specified in the parametric data. Both parts are panel mount configurations with identical mechanical specifications.

Q: Do both parts carry the same regulatory certifications?

A: Yes. Both the IEG666-0-SW-50.0-A-01-V and IEGH666-0-SW-50.0-01-V are certified by CSA, TUV, and UL1077, meeting the same compliance requirements.

Q: What is the basis for substitution between these part numbers?

A: Substitution is based on complete equivalence across all critical electrical parameters (current, voltage ratings, protection type) and mechanical parameters (poles, actuator, mounting). Both parts belong to the same IEG series and are manufactured by Sensata Technologies.

Q: Are there inventory or lead time considerations when selecting between these parts?

A: The IEG666-0-SW-50.0-A-01-V has 834 units in stock, while the IEGH666-0-SW-50.0-01-V has 816 units available. Selection may be influenced by immediate availability requirements.