912FK0250 Reliance Electric FlexPak 3000 25HP Dynamic Braking Kit

Product Overview

Key Specifications

• Part Number: 912FK0250

• Manufacturer: Reliance Electric (Rockwell Automation)

• Compatible Drive Series: FlexPak 3000 Digital DC Drives

• Rated Motor Power: 25HP (230VAC input)

• Enclosure Requirement: For drives without NEMA 1 enclosures

• Braking Resistance: 1.212 ohms

• Kit Weight: Approximately 1.36 kg (3 lb)

• Mounting: External surface mount (panel or cabinet)

• Operating Temperature: 0°C to +60°C

• Storage Temperature: -20°C to +85°C

• Protection Features: Overvoltage suppression, short-circuit protection, thermal overload protection

• Electrical Isolation: High-voltage isolation between power and control circuits

Kit Components

• Dynamic Braking Contactor: Heavy-duty electromechanical contactor to switch the braking resistor into the DC bus circuit during deceleration.

• Surge Suppressor Assembly: Metal-oxide varistor (MOV) network to absorb voltage spikes and protect the contactor and drive from electrical transients.

• Braking Resistor Assembly: High-wattage, wire-wound resistor designed to dissipate regenerative energy efficiently and withstand continuous cycling.

• Protective Enclosure: Rugged, ventilated metal enclosure to shield internal components from dust, debris, and physical damage, with integrated thermal management for heat dissipation.

• Pre-Wired Terminals: Clearly labeled screw terminals for fast, secure connection to the FlexPak 3000 drive and AC power supply.

Core Features and Benefits

• Optimized for 25HP FlexPak 3000 Drives: Factory-matched components ensure seamless integration and maximum braking efficiency for 25HP 230VAC drives without NEMA 1 enclosures.

• Fast, Controlled Stopping: Dissipates regenerative energy in milliseconds, reducing stopping distance and minimizing mechanical wear on motors, gearboxes, and couplings.

• Drive Protection: Prevents dangerous DC bus overvoltage conditions caused by regenerative feedback, extending drive service life and reducing unplanned downtime.

• Heavy-Duty Construction: Industrial-grade components and a rugged metal enclosure deliver reliable performance in harsh factory environments, including dust, vibration, and temperature fluctuations.

• Easy Installation: Pre-assembled and pre-tested, the kit connects directly to the FlexPak 3000 drive with standard wiring, eliminating complex setup or programming requirements.

• Cost-Effective Retrofit: Ideal for upgrading legacy FlexPak 3000 systems with inadequate braking capabilities, avoiding the need for full drive replacement.

Applications

• Material Handling: Cranes, hoists, conveyors, and automated guided vehicles (AGVs)

• Factory Automation: Packaging machines, assembly lines, and machine tools

• Process Control: Food and beverage, pharmaceutical, and chemical processing equipment

• Motion Control: High-inertia loads such as flywheels, large fans, and centrifuges

• Legacy System Retrofits: Replacement or upgrade for aging braking kits in existing FlexPak 3000 installations

Lifecycle and Availability

• Original Production Status: Discontinued by the OEM (Reliance Electric/Rockwell Automation)

• Current Availability: Offered as new surplus, professionally refurbished, and tested used units from authorized industrial component suppliers.

• Warranty: Typically 12 to 36 months from authorized sellers, depending on unit condition.

• Testing: Each unit undergoes comprehensive continuity, isolation, thermal, and load testing prior to shipment to ensure compliance with original factory specifications.