Description
The Square D KA26250BC is a 250 Amp, 2-pole molded case circuit breaker designed for single-phase electrical systems. It provides thermal-magnetic protection for circuits operating up to 600 VAC or 250 VDC. This I-Line style breaker is compatible with Square D I-Line panelboards and switchboards.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Square D |
| Category |
Circuit Breaker |
| Part Number |
KA26250BC |
| Subcategory |
Molded Case Circuit Breaker |
| Series |
KA |
| Poles |
2 |
| Current Rating |
250 Amp |
| Voltage Rating |
240VAC, 480VAC, 600VAC, 250VDC |
| Phase |
Single-Phase |
| Trip Type |
Thermal-Magnetic |
| Trip Function |
Long-Time, Instantaneous |
| Trip Adjustability |
Fixed Thermal, Adjustable Magnetic |
| Mounting Type |
I-Line Plug-In |
| Terminal Type |
Lugs |
| Wire Range |
4 AWG – 350 kcmil |
| Interrupting Rating |
42kA @ 240VAC, 25kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC |
| Optional Features |
Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
| Phase Connection |
B-C (Factory Configured) |
| Standards |
CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approvals |
CE, CSA, UL |
| Operating Temperature |
40°C |
| Construction Features |
HACR Rated, Visual Trip Indicator |
| Weight |
11 lbs |
Information About KA26250BC
The KA26250BC is part of Square D’s KA series of molded case breakers, engineered for high-reliability industrial and commercial applications. It features a thermal-magnetic trip mechanism with long-time and instantaneous (LI) functionality. The breaker supports wire sizes from 4 AWG to 350 kcmil for both aluminum and copper conductors. Optional features include shunt trip, auxiliary switch, undervoltage release, and alarm switch for enhanced operational flexibility.
Key Features:
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Series: KA Series molded case breaker for industrial use.
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Poles: 2-pole configuration for single-phase systems.
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Current Rating: 250 Amp continuous load capacity.
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Voltage Rating: 240VAC, 480VAC, 600VAC, 250VDC compatible.
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Mounting Style: I-Line plug-in for secure panelboard installation.
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Trip Mechanism: Thermal-magnetic with long-time and instantaneous (LI) protection.
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Interrupting Capacity: 42kA @ 240VAC, 25kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC.
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Wire Range: 4 AWG – 350 kcmil (Al/Cu).
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Optional Features: Shunt trip, auxiliary switch, undervoltage release, alarm switch.
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Construction Features: HACR rated with visual trip indicator.
The KA26250BC delivers the reliability and precision required for industrial and commercial single-phase circuit protection.
