SIEMENS 3TK2825-1BB40 Safety Relay Module
The Siemens 3TK2825-1BB40 is a professional-grade safety relay module engineered for industrial control systems. Designed to monitor safety functions like emergency stops and safety gates, it provides reliable machine protection by ensuring immediate shutdown during hazardous conditions. This module delivers fail-safe operation in critical applications where personnel and equipment safety are paramount.
| Parameter | Value |
|---|---|
| Brand | Siemens |
| Model | 3TK2825-1BB40 |
| Rated Voltage | 24V DC/230V AC |
| Contact Configuration | 2 NO safety contacts, 1 NC signal contact |
| Operating Temperature | -25°C to +55°C |
| Dimensions (WxHxD) | 45mm x 99mm x 114mm |
| Protection Class | IP20 |


Industrial Applications
This safety relay is essential in manufacturing plants, robotic systems, and material handling equipment where functional safety compliance (ISO 13849) is required. It integrates seamlessly with Siemens safety components like 3SE switches and SIRIUS contactors. Commonly used in press machinery, conveyor systems, and automated assembly lines to prevent accidental startups during maintenance.
About Apex Automation
Founded in 2014, Apex Automation provides ready-to-ship industrial automation equipment with expert technical support. Our specialists offer comprehensive pre-sales consultation to ensure perfect component matching, backed by 1-year warranty coverage and responsive after-sales service. Contact us via WhatsApp for immediate assistance with custom requirements or unavailable models.
Pricing & Availability: Actual pricing varies by configuration and quantity. Email technical specifications to anikaqx@gmail.com for competitive quotes. All orders include professional installation guidance and 12-month performance guarantee.

















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