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HYUNDAI Contactor UMC500
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Rated Insulation Voltage Ui V AC1,000
Rated Operational Voltage Ue V AC1,000
Rated impulse withstand current Uimp 8
Rated thermal current Ith (AC1) A 550
AC-3 200-240V kW/A 140/500
AC-3 380-440V kW/A 250/500
AC-3 500-550V kW/A 300/426
AC-3 660-690V kW/A 335/360
AC-3 (le) Lifetime Electrical x10,000 times 50
AC-3 Lifetime Mechanical x10,000 times 500
AC-4 200-240V A 90/350
AC-4 380-440V A 175/350
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: How can a first-time international buyer verify that OKmarts is a legitimate entity and not a fraudulent website?
A: OKmarts operates under a legally registered corporate entity with verifiable business registration records, global tax compliance IDs, and physical warehouse infrastructure. We can provide corporate bank references, Dunn & Bradstreet (D-U-N-S) numbers, and customer references from established industrial firms in your region to validate our commercial legitimacy before you transfer funds.
Q: Can OKmarts provide specialized industrial packaging for sea freight or long-term tropical storage?
A: Yes. For international shipping or extended warehouse storage in high-humidity regions, we offer upgraded industrial packaging options. This includes vacuum-sealed anti-static (ESD) barriers, desiccant packs, heavy-duty wooden crates, and shock-absorbent padding tailored to withstand harsh maritime transit conditions.
Q: Are the products listed on OKmarts sourced from the gray market or unauthorized liquidation stock?
A: No. Unlike surplus liquidation brokers who sell unpredictable, unvetted excess inventory, OKmarts builds strategic partnerships directly with active factory supply chains and authorized distribution channels. This ensures that every component is fully traceable, factory-fresh, and covered by standard manufacturer liability frameworks.
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Q&A
Q: Is there a replacement or compensation policy for damaged goods?
A: Yes, we have a comprehensive replacement and compensation policy for damaged goods. If you receive a damaged product, please contact our customer service team immediately, and we will arrange for a replacement or appropriate compensation.
Q: How can I apply for a purchase invoice?
A: On the checkout page, you can select the option for an invoice and fill in the relevant invoice information. We will provide you with the corresponding invoice according to your request.
Q: Is it safe to shop online?
A: Yes, shopping online is generally safe. We take various security measures to protect your personal information and offer secure payment options.







