Overview
The Siemens TRA111B0P is a time delay relay designed for on-delay timing applications in industrial control systems. This relay delivers dependable performance in automation circuits where controlled time delays are essential. As a used unit, it offers cost-effective operation for retrofit, repair, and upgrade projects where reliable timing control is critical.
Key Features
- On-delay timing function for controlled switching operations
- Electronic time relay technology for precise, repeatable timing
- Compact design suitable for control cabinets and switchgear integration
- Instantaneous and delayed contacts for flexible circuit design
- DIN-rail or panel-mount compatible construction
Technical Specifications
The TRA111B0P incorporates standard Siemens timing relay architecture, supporting:
- On-delay timing with adjustable time range
- Multiple contact configuration (instantaneous + delayed)
- AC/DC compatible coil voltage options
- Contact ratings suitable for low-voltage control circuits
- Standard enclosure and terminal rating per IEC/UL specifications
Typical Applications
The Siemens TRA111B0P time delay relay is ideal for:
- Motor start-up sequencing and soft-start control
- HVAC system delay timers and compressor start cycles
- Industrial process control with time-dependent switching
- Protective circuits requiring delayed response
- Lighting, alarm, and signaling systems with time delay
Compatibility & Replacements
The TRA111B0P is part of Siemens’ SIRIUS timing relay product family. For replacement or substitution, consult Siemens technical documentation or distributors for equivalent or upgraded models in the 3RP (microprocessor-based) or 7PV (compact) timing relay series, depending on your voltage, contact, and timing range requirements. As a used item in this listing, verify compatibility with your existing control circuit before installation.
