Hoffman Electrical Cabinet

• Operator adapter type: A-21ITE (for Siemens ITE / Max-Flex)
• Enclosure style: Hoffman / nVent SITES universal cutout disconnect enclosure 
• Ratings / frame: supports mounting of Siemens I-T-E Max-Flex handle operators (small or large depending on amperage) 
• Material: steel, powder coated finish (gray)
• Dimensions (adapter plate): height ~ 268 mm, width ~ 62 mm, depth ~ 13 mm
• Compatible operator brands/types (per the label in your photo): Allen-Bradley 1494F / 1494D / 1494V; Cutler-Hammer C361 / C371; GE SCH / STDA; Siemens ITE FHOH / FHOHS / FHON; Square D 9422; Westinghouse SM

Catalog / adapter numbers (from label):

• A-21ABA for Allen-Bradley
• A-21ABVA for Allen-Bradley 1494V
• A-21CHVA for Cutler-Hammer
• A-21GETDA for GE
• A-21ITE for Siemens ITE
• A-21SDA for Square D
• A-21WHA for Cutler-Hammer / Westinghouse 
• A-21BAP blank adapter plate option 

Hoffman Operator Adapter Electrical Control Panel

• Includes three (3) Allen-Bradley PowerFlex Variable Frequency Drives (VFDs)
• Integrated Sola/Hevi-Duty SDN40-24-480C DIN Rail Power Supply (960 Watt, 480 VAC input, 24 VDC output)
• Heavy-duty industrial electrical enclosure with DIN-rail mounted components
• Designed for integration with automation and motor-control systems

Description

This is a Hoffman / Vent SITES Operator Adapter Kit (A-21 series) designed for use in universal cutout disconnect enclosures. The adapter allows mounting and interlock of various brands of disconnect switches or circuit breakers (e.g. Siemens ITE Max-Flex, Allen-Bradley 1494, GE, Cutler-Hammer, Square D) into a standard universal enclosure opening. It includes the adapter plate and necessary hardware to interface the operator handle mechanism with the enclosure door.

What It Does

The adapter kit bridges the mechanical and mounting differences between the enclosure cutout (universal flange style) and the specific disconnect operator (switch or breaker). It ensures that the handle / operator is correctly positioned and that the door interlock works properly (so the door and the disconnect handle are synchronized). Without the proper adapter, the operator might not align, or the door might not interlock correctly, leading to unsafe or nonfunctional installation.

Capabilities

• Allows retrofitting or new installs of various brand operators into a universal cutout enclosure
• Maintains door interlock and proper mechanical alignment
• Supports different amperages (small vs large handle) depending on the operator used 
• Suitable for NEMA Type 4 / 12 rated enclosures in harsh or industrial environments 
• Corrosion-resistant powder coating and durable steel construction

Core Functions

• Mounting interface: Provides the correct hole pattern / mounting arrangement to match the disconnect operator with the universal enclosure cutout
• Mechanical coupling: Couples the handle mechanism of the operator to the exterior door handle so the user can actuate the switch from outside
• Interlock function: Ensures that when the door is open, the operator cannot be engaged (or vice versa) as per safety requirement
• Adaptability: Supports multiple brands and types via different adapter catalog models

Design Features & Benefits

• Universal compatibility: One enclosure cutout works for multiple operator brands using different adapters
• Ease of installation: Adapter kits come with required fasteners and instructions 
• Safety: Maintains correct alignment and interlock to comply with safety and electrical codes
• Durability: Steel construction with powder coating helps resist corrosion and wear
• Flexibility: You can choose among A-21IBA, A-21CHVA, A-21GETDA, etc. to match the operator brand you are using

Applications & Industries

• Industrial control panels and motor control centers
• Manufacturing plants (machinery, conveyors, pumps)
• Infrastructure installations (water/waste treatment, utilities)
• Retrofit or upgrade of existing disconnect enclosures
• Any facility where multiple brands of disconnects may be used and a universal enclosure cutout is desired

Machine Overview & Summary

This listing describes an operator adapter kit (A-21 family) for use in Hoffman / nVent SITES universal disconnect enclosures. The adapter allows integration of various disconnect operators (Allen-Bradley, GE, Siemens ITE, Cutler-Hammer, Square D, etc.) into a standardized enclosure opening. It ensures proper mechanical alignment, door interlock, and safe functioning of the disconnect across different brands. With robust steel construction, powder coating for durability, and support for both smaller and larger handles depending on amperage, this adapter system offers flexibility, safety, and value in electrical control systems.

• Model: SINAMICS V90 Servo Drive
• Part Number: 6SL3210-5FE13-5UF0
• Power: 3.5 kW motor capacity
• Input Voltage: 3-phase AC 380–480V, 50/60 Hz
• Input Current: 13.8A
• Output Current: 11.0A
• Frequency Range: 0–330 Hz
• Interface: PROFINET (PN) communication
• Protection: IP20 rated enclosure
• Certifications: UL, CE, EAC, KCC, RoHS compliant
• Country of Manufacture: China
• Siemens AG Headquarters: Erlangen, Germany

Description

The Siemens SINAMICS V90 (6SL3210-5FE13-5UF0) is a high-performance servo drive designed for motion control applications requiring precision, speed, and efficiency. This particular unit is configured with a PROFINET (PN) communication interface, making it suitable for seamless integration into modern industrial automation systems. With a motor rating of 3.5 kW and robust voltage tolerance, it offers reliable operation across a wide range of manufacturing and processing environments.

What It Does

This servo drive controls the operation of a servo motor, regulating speed, torque, and positioning with high precision. By integrating with automation systems via PROFINET, it ensures synchronized performance across multiple axes or equipment. It translates digital control signals into smooth and efficient motor movement, critical for achieving automation accuracy.

Capabilities

• Delivers stable and accurate motor control up to 3.5 kW
• Handles dynamic load changes with fast response times
• Offers PROFINET connectivity for real-time communication
• Capable of operating across a broad input voltage and frequency range
• Supports high-speed motion with 0–330 Hz output frequency

Core Functions

• Controls position, speed, and torque of servo motors
• Provides smooth motion profiles for demanding applications
• Facilitates direct integration with Siemens PLCs and automation platforms
• Monitors and protects against overcurrent, overheating, and voltage fluctuations
• Enables multi-axis synchronization through PROFINET networking

Design Features & Benefits

• Compact, modular design saves panel space
• Easy integration with Siemens TIA Portal for simplified setup
• Built-in PROFINET interface reduces wiring complexity
• High efficiency ensures reduced energy consumption
• IP20 rating for reliable use in industrial electrical cabinets
• Certified for global use, meeting major international safety and performance standards

Applications & Industries

• Machine Tools: High-precision milling, cutting, drilling, CNC equipment
• Packaging: Automated packing, labeling, and sealing systems
• Textile Machinery: Weaving, knitting, and fabric processing lines
• Material Handling: Conveyor systems, robotics, automated guided vehicles
• Electronics & Assembly: Pick-and-place machines, automated assembly lines
• General Manufacturing: Any automation system requiring precise motor control

Machine Overview & Summary

The Siemens SINAMICS V90 6SL3210-5FE13-5UF0 is a versatile servo drive engineered for precision automation. Supporting a 3.5 kW motor with PROFINET connectivity, it delivers accurate, dynamic, and energy-efficient control in industrial applications. Its robust design, global certifications, and seamless integration into Siemens’ automation ecosystem make it a reliable choice for industries requiring high-performance servo solutions. With its ability to handle fast cycles, dynamic loads, and multi-axis coordination, this unit is a cornerstone of modern manufacturing automation.