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    Quote

    Fast Track to a Quote

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    • COTO Relay 3501-05-511
    • COTO Relay 3501-05-511
    • COTO Relay 3501-05-511
    1/3

    • Certification | Testing
      Factory Certified

    • Refund guarantee
      24h refund guarantee

    • Secure Payment
      PayPal Verified

    Brand New
    In Stock

    COTO Relay 3501-05-511

    14 inquiries last 6 mos.
    US $ 102 .69 / ea
    Registered Members Enjoy Exclusive Discounts
    Join Now >
    Quantity
    4
    MOQ : 4

    Payment Methods

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    Need a Same-Day Quote?

    Send your PO or PDF list directly to our specialists now

    Need help confirming model compatibility?

    Get fast and efficient assistance from our experienced technical sales and customer service teams. No question is too small, and no problem is too big.
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    • 100% Original
      Genuine OEM Parts

    • Fast Delivery
      Shipped via FedEx / DHL / UPS

    • 12-Month Warranty
      Worry-Free Coverage

    • Secure Packaging
      Safe & Reliable

    • 5,000+ Global Suppliers
      Trusted by Professionals

    Professional Model-Matching System

    Send us your model numbers or nameplate details.
    We will match your request with our 5,000+ verified suppliers and issue a quotation.

    3500 SERIES/LOW THERMAL EMF REED RELAYS
    Low power coils to ensure low thermal EMF
    Control/Signal isolation of 1500 VDC
    High reliability, hermetically sealed contacts

    Why Global Buyers Choose O&Kmarts

    O&Kmarts:
    • Access to a wide range of SKUs across multiple brands and series
    • One RFQ connects you to 5,000+ global supplier quotes
    • Better availability for urgent and hard-to-find parts
    • Faster global delivery via FedEx / DHL / UPS
    • Easier access to rare and high-value models
    • Flexible sourcing for individual parts or complete solutions
    • Lower MOQs and more adaptable buying options
    • Multi-brand procurement in one order
    • OEM replacement and alternative model solutions available
    • Fewer intermediaries, ensuring more competitive pricing

    Why Global Buyers Choose O&Kmarts

    Local Suppliers:
    • Limited to fast-moving SKUs only
    • Limited local market availability
    • Inventory frequently fails to meet urgent demand
    • Long replenishment cycles, often taking weeks
    • Rarely stock high-value compressors (e.g. Copeland YHV119)
    • Frequently require bundled purchases
    • Rigid and difficult MOQ negotiations
    • Limited brand selection
    • Minimal or no customization capability
    • Higher local distribution and markup costs

    Top Questions from OKmarts Buyers

    • Q: Does OKmarts offer volume discounts, corporate account tier pricing, or contract pricing?

      A: Yes, we offer tailored B2B quotation frameworks. Procurement managers can submit a Request for Quote (RFQ) directly through the platform or contact a dedicated account manager to unlock tiered volume discounts and wholesale pricing structures.

    • Q: Can OKmarts issue formalized, compliant proforma invoices and commercial invoices tailored for corporate accounting?

      A: Absolutely. Our automated billing system generates itemized Proforma Invoices (PI) and Commercial Invoices containing corporate tax IDs, purchase order (PO) numbers, and explicit company details necessary to satisfy international corporate accounting and auditing standards.

    • Q: How does OKmarts ensure data privacy and cybersecurity regarding our corporate blueprints and proprietary purchase data?

      A: We protect your data using enterprise-grade SSL encryption and secure cloud architectures. Any technical blueprints, system designs, or proprietary engineering files uploaded to our servers for customization or compatibility analysis are treated under strict confidentiality protocols and non-disclosure standards.

    3501-05-511
    High Efficiency
    Stable Performance
    Long Service Life
    Explore More COTO Relay

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    Q&A

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    • Q: How can I contact customer service for assistance?

      A: You can find the contact information for customer service at the bottom of the webpage or in your user account. Usually, options include online chat, customer service hotline, or email. Our customer service team will respond as soon as possible to provide assistance.

    • Q: Can I place an order over the phone?

      A: Yes, in some cases, you may be able to place an order over the phone. Please contact our customer service team and provide them with the necessary details to assist you with the phone order process.

    • Q: Are there customer reviews available for products?

      A: Yes, we encourage customers to share their feedback and reviews on our platform. You can find customer reviews and ratings on the product pages, which provide valuable insights into the product's quality and performance.


    Customer reviews

    5.0
    Based on 5 reviews
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    • Dec 10, 2025

      Julia Vasquez
      I find it very helpful that you have dedicated sections for shipping and billing addresses.
      Helpful?
      (0)
      (0)

    • Mar 06, 2025

      Mike Hilt
      The part in the picture looks like it's in good shape, and the price is okay.
      Helpful?
      (0)
      (0)
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