AB 194L-E25-A Three-pole disconnect switch

Allen-Bradley 194L-E25-A Disconnect Switch Overview

The Allen-Bradley 194L-E25-A is a three-pole disconnect switch belonging to the Bulletin 194L series. The primary function of a disconnect switch is to provide a visible break point in an electrical system to ensure the circuit is safely isolated during maintenance or repair, preventing accidental energization.

Product Detailed Description

• Function:

• Provides isolation of electrical circuits to ensure safe maintenance and repair.

• Offers a visible break gap in the open position, complying with safety standards.

• Typically does not provide overload or short-circuit protection and needs to be used in conjunction with other protective devices.

• Manually operated, with a handle for opening and closing.

• Features:

• Three-pole switch for three-phase AC circuits.

• Rated current of 25 Amperes.

• Compact design for easy installation.

• Offers various mounting options, such as base mounting or DIN rail mounting.

• May include auxiliary contacts to indicate switch status.

• Locking mechanism to lock the handle in the open position, preventing accidental closing.

Product Parameters

As the model number is specific, here are the parameters based on this model:

• Product Series:

• Bulletin 194L

• Model Number:

• 194L-E25-A

• Number of Poles:

• 3 poles

• Rated Operational Current (Ie):

• 25 A

• Rated Operational Voltage (Ue):

• Up to 690 V AC (refer to the official manual for specific voltage ratings)

• Rated Insulation Voltage (Ui):

• Typically higher than the rated operational voltage

• Rated Impulse Withstand Voltage (Uimp):

• Typically 6 kV or higher

• Short-Time Withstand Current (Icw):

• Refer to the official manual for specific values

• Connection Method:

• Screw terminals

• Mounting Method:

• Base mounting (may also support DIN rail mounting, please consult the manual)

• Handle Color:

• Typically black

• Locking Feature:

• Provides a locking mechanism to lock the handle in the open position

• Auxiliary Contacts:

• May be optionally equipped with auxiliary contacts (refer to ordering information for specific configurations)

• Degree of Protection (IP):

• Refer to the official manual for specific values, typically IP20 or higher (for terminals)

• Standards Compliance:

• IEC 60947-3

Product Advantages

• Safe and Reliable:

• Provides a visible break point to ensure safe electrical isolation.

• Locking mechanism prevents accidental closing.

• Complies with IEC safety standards.

• Compact Structure:

• Saves installation space.

• Easy Installation:

• Various mounting options available.

• Simple Operation:

• Manual operation is intuitive and easy to understand.

• Good Durability:

• Allen-Bradley products typically have a long service life.

Precautions

• Correct Selection:

• Select the appropriate disconnect switch based on the rated current and voltage of the circuit.

• Ensure the disconnect switch's ratings meet or exceed the application requirements.

• Correct Installation:

• Follow Allen-Bradley's installation guidelines.

• Ensure the switch is securely mounted and the wiring is correct and reliable.

• Safe Operation:

• Always disconnect the disconnect switch and lock the handle before performing maintenance or repairs.

• Only qualified electrical personnel should perform installation and maintenance.

• Use with Other Protective Devices:

• Disconnect switches do not provide overload or short-circuit protection and need to be used in conjunction with protective devices such as fuses and circuit breakers.

• Regular Inspection:

• Periodically inspect the mechanical operation and electrical connections of the disconnect switch to ensure proper functioning.

Product Applications

The Allen-Bradley 194L-E25-A disconnect switch is widely used in electrical systems in various industrial and commercial sectors to provide safe isolation, such as:

• Power isolation for machines and equipment:

• Providing safe electrical isolation when performing maintenance or repairs on motors, drives, control panels, etc.

• Control panels and distribution cabinets:

• As main isolators or branch isolators.

• Lighting systems:

• Providing isolation for lighting circuits.

• HVAC systems:

• Providing power isolation for heating, ventilation, and air conditioning equipment.

• Any electrical circuit requiring a visible break point.

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