Siemens / ERNI Industrial Relay Circuit Board Module
Product Overview
Manufacturer: Siemens / ERNI
Component Type: Multi-Relay Interface / Output Circuit Board Module
Origin: Made in Portugal (Relays)
Condition: Used / Tested / Good Working Order (Pulled from professional industrial environment)
Part Numbers / Identifiers visible:
ERNI connector marking: 303 491
PCB trace identifiers: Vero, L5
Technical Specifications
Relay Specifications:
Brand: Siemens (Blue cube style)
Ratings: 5A / 250V~ and 8A / 250V~
Quantity: 10 individual Siemens relay units mounted on board
Interface / Connectors:
Top Connector: ERNI multi-pin indirect edge connector (303 491)
Bottom Connectors: Terminal block interface with integrated status indicator LEDs (red)
Board Layout: Single-sided copper trace layout with through-hole soldered components, supporting discrete resistors and diodes for logic/switching protection.
Applications
Industrial automation control panels
PLC output expansion and signal switching
Custom machinery, retrofits, and electrical test benches
Replacement spare part for legacy industrial control systems
Shipping & Handling
Packaging: Shipped securely in anti-static material and heavy-duty protective boxing to prevent pin or component damage.
Dispatch: Fast handling within 1 business day. Combined shipping available for multiple industrial automation components.neering
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