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HYUNDAI Contactor UMC25
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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 45
AC-3 200-240V kW/A 5.5/25
AC-3 380-440V kW/A 11/25
AC-3 500-550V kW/A 15/22
AC-3 660-690V kW/A 15/18
AC-3 (le) Lifetime Electrical x10,000 times 2,500
AC-3 Lifetime Mechanical x10,000 times 15,000
AC-4 200-240V A 3.7/18
AC-4 380-440V A 5.5/13
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: 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.
Q: Can OKmarts assist in verifying technical compatibility before I place a high-value order?
A: Yes. Buyers can upload existing equipment nameplates, system schematics, or parameter requirements. Our applications engineers will cross-verify physical dimensions, electrical ratings, and communication protocols (e.g., Profinet, EtherCAT) before finalizing the order.
Q: Is there a warranty provided on industrial parts, and how is the RMA (Return Merchandise Authorization) process handled?
A: All new and original industrial parts carry a standard 12-month factory warranty. If a component fails or shows defects within the warranty period, buyers can initiate an RMA request through our platform, which prompts our team to coordinate testing, repair, or replacement directly with the manufacturer.
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Q&A
Q: Is it possible to communicate with sellers or other buyers?
A: Yes, we offer an online customer service system and a user review section where you can communicate with merchants or other buyers, ask questions, or share your shopping experience.
Q: Can I pre-order items that are not yet released?
A: Yes, we may offer pre-order options for certain items that are not yet released. Pre-ordering allows you to secure your item in advance, and we will ship it to you as soon as it becomes available.
Q: Are there product recommendations or bestseller rankings?
A: Yes, based on sales volume and user ratings, we provide recommendations for popular items or offer bestseller lists to help you discover trending and well-received products.







