Overview
The Allen-Bradley 509-A0D /B is a NEMA Size 0 full voltage non-reversing (FVNR) motor starter from the industry-standard Bulletin 509 series. This open-type unit is designed for across-the-line motor control in industrial applications and comes equipped with 595-A /B auxiliary contact blocks, expanding circuit control capability. The included 42185-800-01 component enables flexible panel integration and alarm signaling. Widely used in manufacturing, HVAC, pump control, and OEM/MRO environments.
Key Features
- NEMA Size 0 Rating: 9A current capacity for 3-phase motors with 120V AC control coil
- Full Voltage Non-Reversing (FVNR): Full voltage non-reversing motor starter design for industrial motor control applications
- 595-A /B Auxiliary Contacts: Normally Open and Normally Closed auxiliary contact blocks for alarm, interlock, and signaling circuits
- Open-Type Construction: Open-type construction ideal for panel mounting in a protected enclosure
- 600V AC Maximum Rating: Compatible with standard three-phase power distribution
- UL and CSA Certified: Global certifications ensure reliability and compliance
Technical Specifications
- Catalog Number: 509-A0D /B (Series B)
- Starter Type: Full Voltage Non-Reversing (FVNR)
- NEMA Size: 0
- Power Voltage Rating: Up to 600V AC
- Control Coil Voltage: 120V AC, 60 Hz
- Rated Current: 9A (AC-3 duty)
- Poles: 3-pole power contacts
- Auxiliary Contacts: 595-A /B blocks (N.O./N.C. configuration)
- Mounting: Panel mount (open frame)
- Mechanical Life: Rated for extended service in industrial duty cycles
- Operating Temperature: Industrial range suitable for typical plant environments
- Condition: Used, thoroughly tested and functional
Typical Applications
- Pump motor control and HVAC system starters
- Factory production line motor management
- Machine tool electrical distribution and control
- Interlock and safety circuits with auxiliary N.O./N.C. contact blocks
- OEM control panel integration and MRO starter replacement
- General industrial across-the-line motor starting up to 9A capacity
Compatibility & Replacements
The Allen-Bradley 509-A0D /B is part of the Bulletin 509 series and pairs directly with 595-A and 595-AB auxiliary contact blocks for expanded control functionality. The included 42185-800-01 component integrates with the starter assembly for auxiliary circuit wiring. Compatible with Allen-Bradley overload relays (eutectic alloy types, sold separately) for motor thermal protection. Original spare parts and contact kits are available through authorized distributors. For field upgrades or cross-compatibility questions with other NEMA Size 0 starters, consult your Allen-Bradley sales office or integration partner.
