Description
The Square D BDA24020Y1 is a 20A, two-pole molded case circuit breaker designed for dependable protection in 480Y/277VAC electrical systems. Its thermal-magnetic trip system provides responsive performance during overload and high-fault conditions. Featuring I-Line mounting, it is suited for industrial distribution panels requiring secure, plug-in installation.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Square D |
| Category |
Circuit Breaker |
| Part Number |
BDA24020Y1 |
| Subcategory |
Molded Case |
| Series |
PowerPact B |
| Frame Type |
BDA Frame / 125A BD Frame |
| Amperage Rating |
20A |
| Voltage Rating |
480Y/277VAC |
| Poles |
2 |
| Phase |
1-Phase (AB Phase Connection) |
| Interrupt Rating |
18kAIC @ 480VAC; 25kAIC @ 277/408VAC |
| Trip Unit |
Thermal Magnetic (Long-Time & Instantaneous) |
| Mounting Type |
I-Line Plug-In |
| Terminal Connection |
I-Line (Line Side) / Mechanical Lug (Load Side) |
| Wire Size Range |
14 to 2/0 AWG Cu/Al |
| Operating Temperature |
-25°C to 70°C (-13°F to 158°F) |
| Certifications |
UL, CSA, CE, IEC, NEMA, NOM, CCC, EAC |
| Standards Compliance |
UL 489, CSA C22.2 No.5, EN/IEC 60947-2 |
| Insulation Voltage |
800V IEC |
| Impulse Withstand Voltage |
8 kV |
| Mechanical Durability |
20,000 cycles |
| Electrical Durability |
10,000 cycles @ 440V In |
| Dimensions |
2.12 in x 5.39 in |
| Weight |
1.42 lb |
Information About BDA24020Y1
The BDA24020Y1 is part of the PowerPact B Series, engineered for compact, versatile protection in commercial and industrial applications. Built on the BDA frame, it supports standardized I-Line plug-in mounting for quick integration into electrical distribution equipment. This breaker uses a dual-function thermal-magnetic trip unit providing long-time and instantaneous protection, making it suitable for mixed-load environments. Its compatibility with wire sizes from 14 to 2/0 AWG and its broad certification set ensure reliable performance across varied installation standards.
Key Features:
- 20A Current Rating: Designed for low-to-moderate load circuits requiring stable overcurrent protection.
- Two-Pole Operation: Provides simultaneous disconnection for systems using AB phase connections.
- Thermal-Magnetic Protection: Delivers long-time and instantaneous trip functions for overload and short-circuit events.
- I-Line Plug-In Mounting: Ensures secure installation in industrial distribution panels with standardized I-Line bus connections.
- High Interrupt Ratings: Supports 18 kAIC at 480VAC and 25 kAIC at 277/408VAC for demanding distribution environments.
- Wide Wire Range: Accepts 14 to 2/0 AWG copper or aluminum conductors for flexible installation.
- Global Certifications: Meets UL, CSA, CE, IEC, NEMA, CCC, NOM, and EAC standards for broad compliance.
- Industrial Durability: Rated for continuous operation up to 70°C and designed for harsh electrical environments.
The BDA24020Y1 delivers the reliability and precision required for modern molded case circuit protection in industrial distribution systems.
