GE SELA36AT0060 Molded Case Circuit Breaker

GE SELA36AT0060 Molded Case Circuit Breaker Overview

The GE SELA36AT0060 is a 3-pole, 60 Ampere (A), 600 Volt AC (VAC) Molded Case Circuit Breaker from GE's Spectra RMS™ series. This series is known for its digital, solid-state, RMS sensing trip system, which provides accurate and reliable protection for electrical circuits. The "LSI" trip function indicates it offers Long-time, Short-time, and Instantaneous protection.

Product Detailed Description

• Core Function: The primary function of the SELA36AT0060 is to protect electrical circuits from overcurrents caused by overloads and short circuits. When an overcurrent condition occurs, the breaker's electronic trip unit detects the fault and rapidly interrupts the current flow, preventing damage to downstream equipment and ensuring electrical safety.

• Trip System: It utilizes a digital, solid-state, RMS sensing trip system. This advanced technology accurately determines the RMS (Root Mean Square) value of both sinusoidal and non-sinusoidal currents. This is crucial in modern electrical systems that often contain harmonics generated by devices like variable frequency drives (VFDs), welders, and computer power supplies. True RMS sensing helps prevent nuisance tripping while still providing reliable protection.

• Trip Functions (LSI):

• Long-Time (L): Provides inverse time protection against sustained overloads. The longer the overload, the faster the breaker trips. This function is typically fixed on this model.

• Short-Time (S): Offers delayed short-circuit protection. It allows for intentional time delays to coordinate with downstream protective devices, ensuring selective tripping (only the closest breaker to the fault trips). This function is adjustable.

• Instantaneous (I): Provides instantaneous trip for high-magnitude short circuits, reacting immediately to clear severe faults. This function is adjustable.

• Interchangeable Trip Unit/Rating Plugs: A key feature of the Spectra RMS series is the ability to change the breaker's ampere rating by replacing a front-mounted rating plug. This offers flexibility for future load changes without replacing the entire breaker. The "0060" in the part number indicates a 60A trip unit.

• Construction: Molded case circuit breakers are enclosed in a rugged, insulating housing. The SELA36AT0060 features a bolt-on connection for secure mounting.

• Continuous Current Rated: Designed for continuous load current applications.

• Suitable for Reverse Feed: Can be installed for reverse power flow applications.

• HACR and HID Rated: Suitable for use in Heating, Air Conditioning, and Refrigeration (HACR) equipment and High-Intensity Discharge (HID) lighting applications, indicating suitability for inductive and high inrush current loads.

Product Parameters

(Note: These are typical parameters for the SELA36AT0060. Always refer to the official GE/ABB technical documentation or datasheet for the most precise and up-to-date specifications.)

• Type: SELA (Spectra RMS™ E-Frame, Long/Short/Instantaneous Trip)

• Poles: 3-Pole

• Amperage (Continuous): 60 Ampere

• System Voltage: 600 VAC (Rated for systems up to 600 VAC)

• Interrupting Rating (AIC - Amperes Interrupting Capacity):

• 100 kAIC at 120/240 VAC

• 100 kAIC at 240 VAC

• 65 kAIC at 277 VAC

• 65 kAIC at 480 VAC

• 25 kAIC at 600 VAC

• Frame Type: SE150 (This indicates the physical size and maximum frame ampere rating, which is 150A for the SE frame, although this specific breaker is rated for 60A with its installed trip unit).

• Trip Style: Electronic (Solid State RMS Sensing), Interchangeable Trip

• Trip Functions: LSI (Long-Time, Short-Time, Instantaneous)

• Long Time: Fixed

• Short Time: Adjustable

• Instantaneous: Adjustable

• Connection Type: Bolt-On

• Wire Size Range: 12 to 3/0 AWG (Copper/Aluminum)

• Actuator Type: Toggle Handle

• Frequency Rating: 50/60 Hz

• Dimensions (approx.): 6.31 inches (H) x 4.12 inches (W) x 3.38 inches (D)

• Weight (approx.): 5.7 lbs (2.6 kg)

• Standards/Certifications: UL Listed, CSA Certified, HACR Rated, HID Rated.

Product Advantages

• Superior Circuit Protection: The digital, solid-state, RMS sensing trip system offers highly accurate and reliable protection against overloads and short circuits, minimizing damage to equipment.

• Harmonic Resilience: True RMS sensing ensures accurate response even in systems with high harmonic content, preventing nuisance tripping that can occur with older thermal-magnetic breakers.

• Flexibility and Adaptability: Interchangeable rating plugs allow for easy current rating changes in the field, reducing inventory requirements and providing flexibility for system upgrades or modifications.

• Selective Coordination: Adjustable short-time and instantaneous settings enable precise coordination with other protective devices, ensuring that only the faulted section of a circuit is isolated, thus minimizing downtime.

• Robust Construction: Molded case design provides durability and reliability in various industrial and commercial environments.

• Versatile Application: Suitable for a wide range of applications including those with inductive loads (HACR) and high inrush currents (HID lighting).

• Safety: Provides essential overcurrent protection, contributing to the overall safety of electrical installations.

Precautions

• Correct Selection: Always ensure that the circuit breaker's ampere rating, voltage rating, and interrupting capacity (AIC) are correctly matched to the specific circuit and fault current levels of the electrical system.

• Professional Installation: Installation should only be performed by qualified electricians in accordance with all local, national, and international electrical codes and standards (e.g., NEC, IEC).

• Proper Wiring: Use the correct wire sizes for the breaker's rating and ensure all connections are tight and secure.

• Torque Specifications: Adhere to the manufacturer's specified torque values for terminal connections to prevent loose connections, overheating, and potential failures.

• Environmental Conditions: Ensure the operating environment (temperature, humidity, presence of corrosive agents) is within the breaker's specified limits.

• Maintenance: While MCCBs generally require little maintenance, periodic inspection for signs of wear, damage, or overheating is recommended. Ensure the toggle mechanism operates freely.

• Discontinued Product Line: It's important to note that GE's electrical distribution business, including the Spectra RMS line, was acquired by ABB. While products like the SELA36AT0060 are still available through various distributors (often as new old stock or reconditioned units), for new installations, ABB's Tmax XT series is often offered as a modern replacement. Consider long-term availability and support when planning new projects.

Product Applications

The GE SELA36AT0060 Molded Case Circuit Breaker is widely applied in commercial, industrial, and original equipment manufacturer (OEM) settings for general circuit protection and distribution.

• Industrial Facilities: Main circuit protection, branch circuit protection for machinery, motors, lighting, and heating loads.

• Commercial Buildings: Panelboards and switchboards for offices, retail spaces, and institutional facilities.

• Motor Control Centers (MCCs): Protecting individual motor circuits within MCCs.

• Distribution Boards: Sub-distribution panels in various settings.

• HVAC Systems: Overcurrent protection for compressors, fans, and other components in heating, ventilation, and air conditioning systems.

• Lighting Panels: Protecting lighting circuits, especially those with HID fixtures.

• OEM Equipment: Integrated into various types of machinery and equipment to provide built-in circuit protection.

• Renewable Energy: Protection in solar and wind power installations.

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