ABB / General ElectricSKLA36AT1200
ABB / General Electric SKLL36AT1200 Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Bolt-On
ABB / General Electric
SKLL36AT1200
Molded Case Circuit Breaker
Brand
ABB / General Electric
SKU
SKLL36AT1200
Quantity
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ABB / General Electric SKLL36AT1200 - 1200A 3 Pole Molded Case Circuit Breaker
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Description
Serving as a high-capacity protection solution, this 1200A, 3-pole MCCB is part of the GE Spectra RMS lineup. It is tailored to safeguard heavy industrial machinery. The bolt-on unit installs into Spectra Series power panelboards and switchboards. It also acts as a functional substitute for the SKLA36AT1200. Featuring a 65 kAIC rating at 480V, the breaker includes an advanced electronic trip unit with adjustable LSI parameters. Digital RMS sensing ensures accurate response to fault currents.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | SKLL36AT1200 |
| Series | SKLL |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 42kA @ 600VAC |
| Frame Type | SK1200 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Spectra Series Switchboards, Spectra Series Power Panelboards, Motor Control Centers |
| 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, Padlock Attachment, Rating Plugs |
|---|---|
| Accessories | Spectra RMS Trip Unit |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | 100% Rated, Current Limiting, HACR Rated, Reverse Feed, True RMS Sensing, Interchangeable Trip Unit |
Product FAQs
8 answersWhat equipment is compatible with the SKLL36AT1200 circuit breaker?
This SK1200 frame breaker is designed for installation in GE Spectra Series switchboards, Spectra Series power panelboards, and compatible motor control centers.
Does the SKLL36AT1200 require a rating plug to operate?
Yes, this Spectra RMS breaker requires an interchangeable rating plug, such as the SRPK1200A1200, to establish its continuous current rating. The rating plug must be installed for the breaker to function properly and allows the trip unit to be matched to the connected cable and busbar ampacity.
Which lug kits are compatible with the SKLL36AT1200 breaker?
The SK1200 frame accepts several field-installable lug kits depending on your wire size requirements. Common options include the TCAL124 (three barrels, 350 to 750 kcmil) and the TCAL125 (four barrels, 250 to 500 kcmil) for copper or aluminum conductors.
How do the trip functions on the SKLL36AT1200 operate?
This breaker features a solid-state electronic trip unit with adjustable Long-Time, Short-Time, and Instantaneous (LSI) parameters. This adjustability allows panel builders to achieve precise overcurrent and short-circuit coordination within complex electrical distribution systems.
Can the SKLL36AT1200 be used to replace an SKLA36AT1200?
Yes, the SKLL36AT1200 is a functional substitute for the SKLA36AT1200. Both are 1200A, 3-pole SK1200 frame breakers, but the SKLL36AT1200 is a 100 percent rated version, whereas the SKLA36AT1200 is standard (80 percent) rated.
Can internal accessories be installed in the SKLL36AT1200 without removing the breaker cover?
Yes, Spectra RMS breakers like the SKLL36AT1200 are designed so that internal accessories, such as shunt trips, auxiliary switches, and undervoltage releases, can be field-installed in accessory pouches without removing the main breaker cover.
Is the SKLL36AT1200 suitable for reverse-feed applications?
Yes, Spectra RMS circuit breakers with electronic trip units are UL Listed for reverse-feed applications, allowing flexibility in how the breaker is wired within the panel.
How does the true RMS sensing in the SKLL36AT1200 trip unit benefit my system?
The solid-state electronic trip unit provides true RMS sensing, which ensures an accurate response to high harmonic content current waveforms produced by SCR drives, welders, and computer power supplies without causing nuisance tripping.
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