ABB / General ElectricTHLC234225
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ABB / General Electric THLC436300 Molded Case Circuit Breaker
- 300A
- 3 Pole
- Bolt-On
ABB / General Electric
THLC436300
Molded Case Circuit Breaker
Brand
ABB / General Electric
SKU
THLC436300
Quantity
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ABB / General Electric THLC436300 - 300A 3 Pole Molded Case Circuit Breaker
Re-Certified
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ABB / General Electric THLC436300 - 300A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | ABB / General Electric |
|---|---|
| Part Number | THLC436300 |
| Series | THLC |
| Amperage | 300A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480VAC, 50kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | GE Switchboards, Motor Control Centers |
| Wire Gauge | (1) 3/0 AWG - 500 kcmil (Cu/Al) or (2) 3/0 AWG - 250 kcmil (Cu/Al) |
| Max Wire | 500 kcmil (Single) or 250 kcmil (Double) |
| Min Wire | 3/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Lugs (TCLK43) |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, High Interrupting Capacity, Non-Interchangeable Trip |
| Special Features | Current Limiting |
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ABB / General Electric THLC436300 - 300A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | ABB / General Electric |
|---|---|
| Part Number | THLC436300-R |
| Series | THLC |
| Amperage | 300A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480VAC, 50kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | GE Switchboards, Motor Control Centers |
| Wire Gauge | (1) 3/0 AWG - 500 kcmil (Cu/Al) or (2) 3/0 AWG - 250 kcmil (Cu/Al) |
| Max Wire | 500 kcmil (Single) or 250 kcmil (Double) |
| Min Wire | 3/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Lugs (TCLK43) |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, High Interrupting Capacity, Non-Interchangeable Trip |
| Special Features | Current Limiting |
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Description
Built for demanding industrial environments, this 300A current-limiting MCCB minimizes let-through energy to prevent damage to downstream electrical components. The THLC4 frame design ensures reliable performance in heavy-duty applications. This 3-pole breaker bolts into compatible GE switchboards and motor control centers. It includes a thermal-magnetic trip unit with an adjustable magnetic setting for customized instantaneous protection.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THLC436300-R |
| Series | THLC |
| Amperage | 300A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480VAC, 50kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | GE Switchboards, Motor Control Centers |
| Wire Gauge | (1) 3/0 AWG - 500 kcmil (Cu/Al) or (2) 3/0 AWG - 250 kcmil (Cu/Al) |
| Max Wire | 500 kcmil (Single) or 250 kcmil (Double) |
| Min Wire | 3/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Lugs (TCLK43) |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, High Interrupting Capacity, Non-Interchangeable Trip |
| Special Features | Current Limiting |
Product FAQs
5 answersCan the THLC436300 be installed in standard GE load centers?
No. This is a heavy-duty, bolt-on molded case circuit breaker designed specifically for use in General Electric switchboards and motor control centers, rather than standard residential or commercial load centers.
How does the current-limiting design of the THLC436300 protect downstream equipment?
Current-limiting breakers like the THLC436300 are engineered to clear faults extremely fast, minimizing peak let-through current and energy. This rapid response reduces thermal and magnetic stress on downstream components during a short circuit.
What wire configurations are supported by the factory lugs on this breaker?
The included lugs support flexible wiring options, accepting either a single 3/0 AWG to 500 kcmil conductor or dual 3/0 AWG to 250 kcmil conductors per phase. Both copper and aluminum wiring are supported.
What does the LI trip function indicate on the THLC436300?
The LI designation means the thermal-magnetic trip unit provides Long-Time (L) protection for sustained overloads and Instantaneous (I) protection for immediate short-circuit clearing. The trip settings on this specific model are fixed.
Why is this breaker listed under both ABB and General Electric?
ABB acquired GE Industrial Solutions, meaning GE-designed breakers like the THLC436300 are now part of the ABB portfolio. The breaker maintains the exact same physical and electrical specifications regardless of whether it has a GE or ABB label.
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