EGB14070 SQUARE D 1P 70A 277V

MCCB · 70A · 1-Pole · 277V · Bolt-On

The EGB14070 Square D 1P 70A 277V circuit breaker is designed for reliable protection in electrical systems. Its compact design ensures easy installation in various applications, making it ideal for residential and commercial use. Engineered for durability, this breaker provides excellent overload and short-circuit protection, ensuring the safety of your electrical circuits.

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Specifications
BrandSquare D
TypeMolded-Case (MCCB)
Amperage70 A
Poles1-Pole
Voltage277V
Interrupting Rating35 kA
MountingBolt-On
Frame / SeriesEGB
Catalogue #EGB14070 SQUARE D 1P 70A 277V
Panel & Switchboard Compatibility

The Square D EGB14070 is a molded-case circuit breaker (MCCB) in Square D's EGB frame, rated 1-pole, 70 A, 277 V AC, 35 kA interrupt with a bolt-on mounting. As an MCCB, it is designed for installation in Square D panelboards and switchboards that accept EGB-frame bolt-on breakers — typically commercial and light-industrial distribution equipment — not residential plug-in loadcentres such as QO or Homeline panels.

Exact panelboard compatibility depends on bus configuration, available space, and the specific Square D enclosure series in your installation. Send us your panelboard model number and we'll confirm the fit.

Yes. The EGB14070 is a molded-case circuit breaker rated 1-pole, 70 A, 277 V with a 35 kA short-circuit interrupting rating, making it well-suited for branch-circuit or feeder protection in commercial and light-industrial panelboards and switchboards. The 277 V rating is commonly used for single-phase lighting circuits fed from a 480Y/277 V three-phase distribution system.

In many cases, yes — Square D's EGB frame has had a long production history and direct replacements are often available. However, you should verify that the replacement matches the original's ampere rating, voltage rating, interrupt rating, and mounting style (bolt-on). Northern Breaker Group specializes in obsolete and hard-to-find breakers; contact us and we'll help identify the correct replacement for your application.

The EGB14070 is a bolt-on breaker, meaning it fastens mechanically to the panelboard bus bar with hardware rather than snapping onto a plug-in bus. This provides a more secure, lower-impedance connection and is standard for MCCB-style commercial panelboards and switchboards. Ensure your enclosure's bus is rated and configured for bolt-on EGB-frame devices before installation.

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