ABB / General ElectricSKLB36BB1200
ABB / General Electric SKHH36AT1200 Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Bolt-On
ABB / General Electric
SKHH36AT1200
Molded Case Circuit Breaker
Brand
ABB / General Electric
SKU
SKHH36AT1200
Quantity
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ABB / General Electric SKHH36AT1200 - 1200A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for heavy-duty applications, the GE SKHH36AT1200 is a 3-pole, 1200A molded case circuit breaker with solid-state protection. It utilizes a Spectra RMS electronic trip unit with an interchangeable rating plug for precise LSI adjustments. Designed to fit Spectra Series switchboards, this bolt-on breaker delivers a 50kAIC rating at 480VAC. As a legacy Spectra frame, it can be replaced by the modern ABB XT7S series when paired with a retrofit kit.Specifications
| Brand | ABB / General Electric |
|---|---|
| Series | SKHH |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 600-1200A |
|---|
| Frame Type | SKHH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Spectra Series Panelboards, Spectra Series Switchboards |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Bell Alarm, Lug Kits, Rating Plugs, Padlock Attachment |
|---|---|
| Accessories | Lugs Not Included, Rating Plug (Factory Installed) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | -20C to 55C |
| Construction Features | 100% Rated, HACR Rated, Reverse Feed, True RMS Sensing, Interchangeable Trip Unit, Trip-Free Mechanism |
Product FAQs
7 answersWhat panelboards and switchboards are compatible with the SKHH36AT1200?
This SK1200 frame breaker is designed for installation in GE Spectra Series panelboards and switchboards.
Is a rating plug required to operate this circuit breaker?
Yes, the Spectra RMS SK1200 frame requires a field-installable, front-mounted rating plug to establish the continuous ampere rating. For a 1200A application, an SRPK1200A1200 rating plug is required.
Does the SKHH36AT1200 come with terminal lugs installed?
This breaker features a bolt-on connection type. Terminal lugs for cable connections are typically sold separately for the SK1200 frame. You will need to source the appropriate lug kits, such as the TCAL125, depending on your specific wire size and material.
What adjustments can be made using the LSI trip unit on this breaker?
The solid-state electronic trip unit allows you to adjust the Long-Time, Short-Time, and Instantaneous trip settings. This provides precise overcurrent protection and allows for selective coordination within your power distribution system.
Does the SKHH36AT1200 feature true RMS sensing?
Yes, the Spectra RMS trip system uses digital sampling to determine the true RMS value of both sinusoidal and non-sinusoidal currents. This ensures accurate overcurrent protection even in environments with high harmonic distortion.
Is the SKHH36AT1200 suitable for reverse feed applications?
Yes, this Spectra RMS molded case circuit breaker is standard rated for reverse feed applications, allowing flexibility in how line and load connections are routed within the enclosure.
Why is this breaker listed under both ABB and General Electric brands?
ABB acquired GE Industrial Solutions. Depending on the date of manufacture, the SKHH36AT1200 may feature either GE or ABB branding, but the physical dimensions, performance, and UL listings remain identical.
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