Reliance Electric 1DB5010C
May 28, 2026

Reliance Electric 1DB5010C

The 1DB5010C is a 10HP (7.5kW) dynamic braking unit from Reliance Electric, designed for SP500 and GP‑1200 series AC drives. It dissipates regenerative energy from overhauling or fast‑decelerating motors, preventing DC bus overvoltage and enabling rapid, controlled stops. Enclosed in a chassis‑style (open‑frame) housing (IP00), it is intended for indoor industrial use. Now discontinued, it is available as new old stock or refurbished units for legacy system maintenance.

Description

Product Description

The 1DB5010C is a 10HP (7.5kW) dynamic braking unit from Reliance Electric, designed for SP500 and GP‑1200 series AC drives. It dissipates regenerative energy from overhauling or fast‑decelerating motors, preventing DC bus overvoltage and enabling rapid, controlled stops. Enclosed in a chassis‑style (open‑frame) housing (IP00), it is intended for indoor industrial use. Now discontinued, it is available as new old stock or refurbished units for legacy system maintenance.

Model Number Interpretation

  • 1: First‑generation dynamic braking platform

  • DB: Dynamic Braking unit

  • 5: 200/230VAC voltage class (three‑phase)

  • 010: 10HP power rating (compatible with 10HP drives)

  • C: Chassis (open‑frame) version, global market

Technical Specifications

  • Input Voltage: Three‑phase 200/230VAC ±10%, 50/60Hz

  • Power Rating: 10HP (7.5kW), continuous braking duty

  • Braking Resistor: Internal high‑power resistor optimized for 10HP motor deceleration

  • Enclosure: Chassis (open‑frame), IP00 (indoor use only)

  • Protection: Overvoltage, overcurrent, overtemperature, short‑circuit, ground fault protection

  • Ambient Conditions: 0–45°C, 5%–95% RH (non‑condensing)

  • Weight: Approximately 15.9kg (35lb)

  • Certifications: UL, CSA listed

Interface and Communication Configuration

  • Power Terminals: L1/L2/L3 (three‑phase input from drive DC bus), PE (protective earth)

  • Control Terminals: Braking enable input (dry contact from drive), fault output relay (250VAC/5A for overtemp/overvoltage)

  • Communication: No onboard communication ports; hardwired interlock with drive only

  • Indicators: Two LEDs; green for power/standby, red for braking active/fault

Core Functions

  • Absorbs regenerative energy from 10HP motors during rapid deceleration or overhauling loads, preventing drive DC bus overvoltage faults

  • Reduces motor stopping time significantly compared to coast‑to‑stop

  • Internal braking resistors eliminate need for external resistor banks, simplifying installation and wiring

  • Seamless integration with Reliance SP500/GP‑1200 series 200/230VAC 10HP drives

  • Comprehensive thermal and electrical protection safeguards the unit and connected drive

Application Scenarios

  • 10HP conveyors, cranes, hoists, mixers, and fans requiring fast, controlled stopping

  • Overhauling load applications (e.g., inclined conveyors, vertical lifts) using 200/230VAC three‑phase power

  • Retrofit projects for legacy Reliance drive systems needing enhanced braking performance

  • Light‑to‑medium manufacturing, commercial HVAC, and material handling systems

Usage and Maintenance Instructions

  • Mount vertically in a clean, dry, well‑ventilated indoor area with 200mm clearance top/bottom for cooling airflow; install in a protective enclosure if exposed to dust or moisture

  • Use rated copper conductors for power wiring; separate power and control cables to minimize EMI

  • Connect braking enable signal from drive to ensure coordinated operation

  • Inspect all terminals and wiring quarterly for looseness, corrosion, or overheating signs

  • Disconnect all power before cleaning; use a dry cloth only—avoid liquids or chemical cleaners

  • Monitor LED indicators during operation; resolve red fault conditions before restarting the system

  • Avoid static discharge when handling; do not disassemble the unit without professional guidance

  • Store spare units in a cool, dry, dust‑free environment


Get a Quote