ABB / General Electric MB513 Main Breaker Kit
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Core Specs
See full specsABB / General Electric MB513 - 225A 3 Pole Main Breaker Kit
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Description
Built for main circuit protection, the General Electric MB513 main breaker kit has a rated current of 225A and a 10kAIC interrupting rating at 480V. This MB series kit is rated for 208Y/120VAC and 480V in a 3-phase, 3-pole configuration. It has a load side lug terminal connection and TQD and THQD breaker types. Thermal magnetic protection provides long-time and instantaneous trip functions.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | MB513 |
| Series | MB |
| Amperage | 225A |
| Poles | 3 |
| Voltage | 208Y/120VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 480VAC |
| Frame Type | TQD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Pro-Stock A-Series Panelboards and TQD/THQD Frame Circuit Breaker |
| Trip Function Code | LI |
|---|---|
| Trip Function | Long-Time, Instantaneous |
Product FAQs
5 answersWhat circuit voltages is the General Electric MB513 rated for?
The rated voltages are 208Y/120VAC and 480V. Select it for an application using one of these voltage ratings, and check the interrupting rating separately against the available fault current.
How do I apply the 10kAIC interrupting rating at 480V?
The 10kAIC rating at 480V is the breaker's fault-interruption capacity at that voltage. For a 480V application, the available fault current at the installation point must not exceed this rating.
How does the thermal-magnetic trip protect the circuit?
Thermal-magnetic operation combines delayed overload protection with rapid response to short circuits. The long-time and instantaneous trip functions address sustained overcurrent and high fault current, respectively.
How are load-side conductors terminated?
The load-side terminal connection uses a lug, which secures the conductor at the breaker terminal. During installation, follow the applicable conductor-preparation and tightening requirements for the lug connection.
Why do phase count and pole count matter when selecting this breaker?
The General Electric MB513 is three-phase and three-pole. Phase count describes the power system, while pole count describes how many circuit conductors the breaker interrupts. Consider both when selecting circuit protection.
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