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TRIAD Transformer MD-500-U
15 RFQs (Last 6 Mos.)
US $ 198 .98 / ea
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Maximum Power:500 VA
Input Voltage1:120 V
Output Voltage2:120 V
Input Voltage Tolerance (Power Cord):+/-10 %
Frequency (Power Cord):50 Hz/60 Hz
Input Voltage1:120 V
Output Voltage2:120 V
Input Voltage Tolerance (Power Cord):+/-10 %
Frequency (Power Cord):50 Hz/60 Hz
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: How does OKmarts handle unexpected price fluctuations or tariff updates after an order is placed?
A: Once a Proforma Invoice is issued and payment is confirmed, your pricing is legally locked. OKmarts absorbs any subsequent raw material price spikes, supplier price adjustments, or sudden export tariff increases, guaranteeing that the price you pay at checkout is final.
Q: What financial protections do I have if the shipped goods do not match the ordered part numbers or technical specifications?
A: OKmarts operates under a strict Order Accuracy Guarantee. If the part numbers delivered do not match your approved Proforma Invoice or Purchase Order due to our fulfillment error, we will issue a full refund or expedite a replacement shipment immediately, covering all return international freight charges.
Q: How can I verify that a product on OKmarts is brand new and not "New Old Stock" (NOS) with degraded internal components?
A: Our warehouse management system strictly tracks manufacturing date codes, especially for sensitive components like VFD electrolytic capacitors or rubber seals. We explicitly state product conditions on the listing and can provide batch date codes prior to shipment for critical applications.
MD-500-U
TRIAD Transformer MD-500-U - triad - transformer
High Efficiency
Stable Performance
Long Service Life
Related Products
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Q: Do you offer free shipping?
A: We may offer free shipping on select products or as part of promotional campaigns. You can check the product details or promotions to see if free shipping is available.
Q: What should I do if I receive the wrong item?
A: If you receive the wrong item, please contact our customer service team immediately. Provide them with the order details and a description of the incorrect item received. We will rectify the issue by arranging for a return and sending you the correct item.
Q: Are there size restrictions for international shipping?
A: International shipping may have size and weight restrictions depending on the destination country and shipping carrier's policies. During the checkout process, the available shipping options and any size restrictions will be displayed based on the dimensions and weight of the items in your cart.
Customer reviews
4.2
Based on 5 reviews
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Feb 19, 2026
Anthony HarrisQuick and hassle-free ordering experience.Helpful?(8)(0)Dec 24, 2025
John YonQuick turnaround, spot on parts.Helpful?(5)(0)