DLW1 Series Universal Type Air Circuit Breaker (ACB) 3P/4P Drawer/Fixed Type | Derlicn

FAQ

1. What is an Air Circuit Breaker and where is it used?
An ACB is a high-capacity circuit breaker used in low-voltage power distribution systems (up to 690V), typically installed in main switchboards to protect against overloads, short circuits, and ground faults. It’s ideal for critical infrastructure, industrial plants, and commercial buildings.

2. What current range do your ACBs support?
Our ACBs are available from 630A to 6300A, with common frame sizes including 1000AF, 1600AF, 3200AF, 4000AF and 6300AF. Each frame supports adjustable protection settings to suit various load profiles.

3. What trip unit types are available for your ACBs?
We offer electronic trip units with full protection functions including LSI (Long-time, Short-time, Instantaneous) and optional ground fault protection. For advanced monitoring, communication-enabled trip units (Modbus/RS485) are also available.

4. Are your products certified for international export?
Absolutely. We manufacture in full compliance with IEC/EN 60947-2. We can also provide CE or other certifications based on the requirements of the target market.

5. Do you offer both fixed and draw-out type ACBs?
Yes, we supply both fixed-mounted and draw-out (withdrawable) types. Draw-out models are widely used for ease of maintenance, system isolation, and backup switching in main distribution panels.

6. How do I choose the correct ACB for my project?
Consider factors such as rated current, breaking capacity (Icu/Ics), pole configuration (3P/4P), trip settings, communication needs, and whether you require fixed or draw-out structure. Our technical team can assist with selection based on your SLD and project specs. You can also send your request to this email address (info@derlicn.com), or you can fill out the contact form on our product page.

7. What is the breaking capacity of your ACBs?
Our ACBs support breaking capacities up to 100kA at 400/415V, depending on the frame size. This ensures safe interruption even in large fault current environments.

8. What’s the typical delivery lead time?
Standard configurations can usually be shipped within 10–15 working days. For customized protection settings, OEM branding, or large volumes, lead time is around 20–30 working days.

9. What is your MOQ for ACB orders?
We support trial orders starting from 1 unit. For OEM/ODM branding or special configurations, MOQs typically start from 10–50 units per model.

10. Do you support OEM/ODM services?
Yes. We offer OEM services including your logo printing, custom color or panel design, and ODM services such as special trip unit programming, customized accessories, or housing design for strategic partners.

11. What is your warranty policy for ACBs?
We offer a 12-month warranty from the shipping date. In case of functional defects under proper use, we provide free spare parts, technical support, or product replacement based on the situation.

12. What kind of after-sales support do you provide?
We provide lifetime technical support, remote commissioning guidance, and if needed, video call assistance. For key markets, we can also recommend or coordinate with local service partners for onsite troubleshooting.

13. Do you provide communication-enabled ACBs?
Yes. Our advanced ACB series supports Modbus-RTU communication, enabling remote monitoring, status checking, and event logging, which is critical for smart power management systems.

14. What payment terms do you accept?
We accept T/T and Alibaba Trade Assurance for online orders. Other options like PayPal can be considered for sample purchases.

15. Why should we choose your company as our ACB supplier?
We are a trusted low-voltage switchgear manufacturer with over 14 years of experience in OEM/ODM export. Our ACBs combine robust protection, customizability, certified performance, and fast response support—backed by successful installations in 40+ countries.