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HYUNDAI Contactor UMC50
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Cross-Reference Brands
Rated Insulation Voltage Ui V AC750
Rated Operational Voltage Ue V AC690
Rated impulse withstand current Uimp 8
Rated thermal current Ith (AC1) A 70
AC-3 200-240V kW/A 15/50
AC-3 380-440V kW/A 22/50
AC-3 500-550V kW/A 30/43
AC-3 660-690V kW/A 30/28
AC-3 (le) Lifetime Electrical x10,000 times 2,000
AC-3 Lifetime Mechanical x10,000 times 15,000
AC-4 200-240V A 7.5/35
AC-4 380-440V A 15/32
AC-4 Lifetime Electrical x10,000 times 30
Why Global Buyers Choose 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
- 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: Can I request a live video inspection of my specific order items before they leave the OKmarts facility?
A: Yes. To maximize peace of mind for high-value or critical orders, buyers can request a "Pre-Shipment Video Verification." Our warehouse team will film the unboxing, display the original manufacturer seals, show matching serial numbers, and verify the physical condition of the components in real-time or via a high-definition video link.
Q: What express logistics options are available for urgent "Factory-Down" emergency repairs?
A: We partner with premier global express couriers, including DHL, FedEx, and UPS, to provide expedited international air freight. Urgent orders are processed with priority handling at our warehouses to ensure the shortest possible transit time to your facility.
Q: What is your policy if an industrial part arrives physically damaged due to improper courier handling?
A: Buyers must inspect the outer packaging and internal items immediately upon delivery. If physical damage is discovered, document the condition with photos/videos and submit a claim to OKmarts within 48 hours of receipt so we can file an immediate report with the carrier and fast-track a replacement shipment.
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Q: How can I create an account?
A: To create an account, click on the "Sign Up" button on the top right corner of the website, and follow the instructions to provide the required information.
Q: How can I filter products by price range?
A: On the product list page, you can use the price filter to set your desired price range. The system will display products that meet your criteria, helping you find suitable items quickly.
Q: Are there membership programs or discounts?
A: Yes, we offer membership programs or member discounts, allowing members to enjoy more privileges and benefits. You can learn more about the membership program and choose to join based on your needs.







