Overview
The Allen-Bradley 595-A auxiliary contact is a field-installable accessory for Bulletin 509 NEMA full-voltage non-reversing starters. This auxiliary contact block provides isolated switching contacts for alarm, interlocking, or status monitoring circuits. Whether used for overload relay indication, start/stop feedback, or equipment diagnostics, the 595-A delivers proven reliability in industrial motor control systems.
Key Features
- Block-Type Design: Mounts directly on eutectic alloy overload relay assemblies without additional mechanical brackets on NEMA sizes 0–2 and 5
- Contact Options: Available in normally open (595-A) or normally closed (595-B) configurations for flexible circuit logic
- 600V AC Rating: Suitable for both 120V and 600V control circuits, with standard 120/240V and 600V AC coil compatibility
- Compact Form Factor: Replaces standard test module, minimizing panel space requirements
- Easy Installation: Requires no additional mounting plate on sizes 0–2; direct retrofit capability
Technical Specifications
- Product Type: Auxiliary Contact Block, Field-Installable
- Compatible NEMA Sizes: 0, 1, 2, and 5 Bulletin 509 starters
- Contact Voltage Rating: 600V AC maximum
- Typical Applications: Overload relay alarm circuits, status indication, equipment interlocking
- Configuration: 595-A (Normally Open) or 595-B (Normally Closed)
- Installation Method: Mounts in place of standard eutectic alloy test module
Typical Applications
- Overload relay trip indication and alarm annunciation
- Motor starter interlocking and sequence control
- Equipment start/stop status feedback to PLC or HMI
- Remote shutdown and safety circuit monitoring
- Multiple-motor coordination in industrial production lines
Compatibility & Replacements
Compatible With
- Bulletin 509 NEMA Sizes 0, 1, 2, and 5 full-voltage non-reversing starters
- Eutectic alloy overload relay assemblies (592-BOW series)
- Series A and Series B 509 starter platforms
- Standard 120V, 240V, and 600V AC control circuits
Replaces / Drop-In Replacement For
- 595-A02 (Normally Open) — eutectic alloy block-type auxiliary contact
- 595-B02 (Normally Closed) — eutectic alloy block-type auxiliary contact
- Original equipment manufacturer (OEM) test module assemblies on equivalent-size Bulletin 509 starters
Works With
- Bulletin 509 Series A and Series B NEMA starters
- 592-BOW series eutectic alloy overload relays
- Control voltage: 120V AC, 240V AC, 600V AC standard offerings
- Standard industrial relay logic and PLC input modules for monitoring
