SCHMERSAL TA471-02/02Y-H-840 Heavy Position Switch

SCHMERSAL TA471-02/02Y-H-840 Heavy Position Switch – TA400 Series

Imagine a high-speed automated production line where a guard door is opened without warning during a machine cycle. Without a reliable heavy-duty position switch, the machine controller receives no signal, safety interlocks fail to trigger, and the result can be catastrophic — equipment damage, production downtime, or worse, personnel injury. The SCHMERSAL TA471-02/02Y-H-840 is engineered precisely to eliminate this risk, delivering robust, repeatable position detection in the harshest industrial environments where standard switches simply cannot survive.

Within the SCHMERSAL TA400 series — one of the most trusted families of heavy-duty position switches in global industrial safety — the TA471-02/02Y-H-840 occupies a critical role. Its dual-circuit contact configuration (2NC + 2NO) and reinforced actuator mechanism make it the preferred choice for OEMs and system integrators across automotive, heavy machinery, food processing, and logistics automation worldwide. SCHMERSAL’s TA series is IEC/EN 60947-5-1 compliant and widely specified in CE-marked machinery across Europe, Asia, and the Americas.

Technical Specifications

• Manufacturer: SCHMERSAL
• Part Number / SKU: TA471-02/02Y-H-840
• Series: TA400 Heavy-Duty Position Switch
• Contact Configuration: 2NC + 2NO (02/02Y)
• Actuator Type: Heavy-duty roller lever (H type)
• Connection Type: Cable entry / conduit (840 designation)
• Enclosure Rating: IP67 (dust-tight and water-immersion resistant)
• Housing Material: Die-cast zinc alloy
• Operating Temperature: -25°C to +80°C
• Standards: IEC/EN 60947-5-1, CE marked
• Weight: Approx. 500 g

Note: All specifications above are based on published SCHMERSAL TA400 series documentation. Always verify against the official datasheet for your specific application.

Key Features & Benefits

• Dual-circuit safety contacts (2NC + 2NO): Enables redundant safety monitoring and direct integration with safety relays and PLCs without additional wiring complexity.
• Heavy-duty die-cast zinc housing: Withstands mechanical shock, vibration, and chemical exposure typical of industrial shop floors and outdoor installations.
• IP67 ingress protection: Fully sealed against dust and temporary water immersion — ideal for washdown environments in food & beverage and pharmaceutical plants.
• Positive-opening contacts: Mechanically forced contact separation ensures fail-safe operation even if contact welding occurs.
• Wide operating temperature range: Reliable performance from -25°C to +80°C, covering cold storage to high-temperature process environments.
• Flexible cable entry (840): Supports multiple conduit and cable gland configurations for easy panel and field installation.

Industry & Equipment Applications

• Automotive manufacturing: Guard door interlocking on robotic welding cells, stamping presses, and paint booths.
• Heavy machinery & metalworking: End-of-travel detection on CNC machining centers, hydraulic presses, and milling machines.
• Food & beverage processing: Washdown-rated position sensing on conveyor gates, filling stations, and packaging lines.
• Logistics & material handling: Pallet conveyor diverters, automated storage and retrieval systems (AS/RS), and dock levelers.
• Energy & utilities: Valve position feedback on water treatment, power generation, and oil & gas installations.

System Integration & Compatible Parts

The TA471-02/02Y-H-840 is designed for seamless integration into SCHMERSAL safety systems and standard industrial control architectures:

• Safety relays: Compatible with SCHMERSAL SRB series and third-party safety relays (Pilz PNOZ, Sick, Omron G9SA).
• Safety PLCs: Direct wiring to Siemens S7-300/400/1500 F-series, Allen-Bradley GuardLogix, and Beckhoff TwinSAFE.
• Related SCHMERSAL TA400 variants: TA471-01/01Y (1NC+1NO), TA471-02/02Y-H-024 (24V LED indicator), TA472 series (stainless steel housing).
• Mounting accessories: SCHMERSAL standard mounting brackets and actuator arms for the TA400 series.

Our Quality Assurance Process

At Konmask.com, every SCHMERSAL component we supply goes through a rigorous sourcing and verification process:

• Authorized supply chain: We source exclusively from verified distributors and authorized SCHMERSAL channel partners to guarantee product authenticity.
• Pre-shipment inspection: Each unit is visually inspected and cross-referenced against the manufacturer’s part number and labeling standards before dispatch.
• Documentation provided: Original manufacturer datasheet, CE declaration of conformity, and packing list included with every shipment.
• Traceability: Batch and lot tracking maintained for all safety-critical components to support your compliance documentation.

How to Order

1. Submit an inquiry: Use the contact form on this page or email support@konmask.com with your required quantity and delivery timeline.
2. Receive a quotation: Our technical sales team will respond within 1 business day with pricing, lead time, and availability confirmation.
3. Order confirmation: Confirm your purchase order; we accept T/T bank transfer, PayPal, and other B2B payment methods.
4. Shipment & tracking: We ship via DHL, FedEx, UPS, or sea freight with full tracking and export documentation.

Why Choose Konmask.com?

• ✅ Industrial automation specialists — deep technical knowledge of PLC, DCS, and safety components from leading global brands.
• ✅ Genuine parts guaranteed — no counterfeits, no grey-market risk; full traceability on every order.
• ✅ Fast global shipping — DHL Express delivery to 200+ countries, with export documentation for customs clearance.
• ✅ B2B inquiry-first service — dedicated account support for OEMs, system integrators, MRO buyers, and trading companies.
• ✅ Technical pre-sales support — our engineers help you confirm compatibility before you order.

Frequently Asked Questions

Q: Is the TA471-02/02Y-H-840 suitable for safety category 4 / PLe applications?
A: The TA471 series features positive-opening contacts per IEC 60947-5-1 Annex K, which is a prerequisite for use in high-category safety circuits. Final safety integrity level depends on the complete system architecture, including the safety relay or PLC used. Consult your safety engineer for a full risk assessment.

Q: What is the difference between the -840 and -024 suffix?
A: The -840 suffix refers to the cable entry/conduit configuration without an integrated indicator light. The -024 suffix variants include a 24V DC LED status indicator. Choose -840 for standard installations where visual indication is not required at the switch body.

Q: Can I get a sample or small quantity for testing?
A: Yes. We support sample orders for qualified buyers. Please contact us with your company details and application requirements, and our team will advise on minimum order quantities and lead times.

Q: Do you provide the original SCHMERSAL datasheet?
A: Yes. The official SCHMERSAL datasheet and CE declaration of conformity are provided with every shipment and can also be sent in advance upon request.

Q: What is the typical lead time for this part?
A: Lead time varies by stock availability. In-stock items typically ship within 3–5 business days. For larger quantities or out-of-stock items, lead time is 2–4 weeks. Contact us for a real-time availability check.

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Original Source: https://Konmask.com
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