At a glance
- Output Voltage
- 21 V to 29 V DC
- Rated Output Current
- 40 A
- Battery Type
- Lead acid
- Charging Current
- 2 A
- Battery Capacity Range
- 4 Ah to 135 Ah (external)
- Input Voltage Range
- 24 V DC nominal from the DC bus
Model DUPS40Current modelMEAN WELL DUPS40 Power Supply Accessory, 24 V, 40 A DC-UPS module
Price on request
At a glance
- Output Voltage
- 21 V to 29 V DC
- Rated Output Current
- 40 A
- Battery Type
- Lead acid
- Charging Current
- 2 A
- Battery Capacity Range
- 4 Ah to 135 Ah (external)
- Input Voltage Range
- 24 V DC nominal from the DC bus
Charges a 24 V battery while mains is present and switches the load to it in a power cut, for access control, CCTV and automation panels. Power supply accessory, 24 V, 40 A DC-UPS module. Uninterruptible DC-UPS controller connected in parallel to the DC bus.
Include the required quantity and configuration in your quote request. Price and availability will be confirmed in the quotation.
- WarrantyManufacturer warranty under MEAN WELL's terms: 3 years. Warranty claims
- DeliveryPrice, availability and delivery charges are confirmed in your quotation. Shipping and delivery
Overview
What it is
The MEAN WELL DUPS40 is a power supply accessory from the DUPS40 series (24 V/40 A DIN Rail Type Uninterruptible DC-UPS Module), rated 24 V, 40 A DC-UPS module.
What it is used for
Sits between a 24 V DC power supply, a 24 V lead acid battery and the load: it charges the battery while mains is present and switches the load to the battery during a power failure, which suits 24 V access control, CCTV and automation panels. MEAN WELL lists applications such as industrial control systems, semiconductor fabrication equipment, factory automation, electro-mechanical apparatus.
Key features
- Uninterruptible DC-UPS controller connected in parallel to the DC bus.
- For 24 V systems, up to 40 A.
- 2 A battery charging current.
- Works with 4 Ah to 135 Ah lead acid batteries.
- Diagnostics and relay signals for DC bus OK, battery discharge and battery fail.
- Protections: battery reverse polarity, short circuit, battery deep discharge, over discharge current.
Key Specifications
- Output Voltage: 21 V to 29 V DC.
- Rated Output Current: 40 A; battery discharge current 0 to 40 A.
- Battery Type: Lead acid.
- Charging Current: 2 A.
- Battery Capacity Range: 4 Ah to 135 Ah (external).
Buying considerations
Size the unit with headroom above the connected load and check the derating information in the datasheet for high ambient temperature or low input voltage. Other models in the same series are listed on this page.
Installation considerations
MEAN WELL treats this unit as a component of the final equipment, so approvals and EMC performance should be confirmed for the complete installation. Wiring and safety details are in the official datasheet linked below.
Features
Size and fit
- Dimensions
- 63 x 125.2 x 113.5 mm (W x H x D)
- Weight
- 0.42 kg
Technical specifications
Key facts
- What is it?
- Power supply accessoryBrand MEAN WELL, model DUPS40
- What does it output?
- 21 V to 29 V DC, 40 A
- What input does it accept?
- 24 V DC nominal from the DC bus
- Which documents are available?
- Datasheet, certificate Open documents
Output
- Output Voltage
- 21 V to 29 V DC
- Rated Output Current
- 40 A; battery discharge current 0 to 40 A
- Battery Charging Voltage
- 24 V battery (2 x 12 V in series or 1 x 24 V)
- Charging Current
- 2 A
Input
- Input Voltage Range
- 24 V DC nominal (24 V to 29 V DC) from the DC bus
- Battery Type
- Lead acid
Protection
- Withstand Voltage
- IP/OP to chassis: 0.5 kV AC; IP/OP to relay: 0.5 kV AC; relay to chassis: 0.5 kV AC
Environment
- Operating Temperature
- -30 °C to +70 °C (see derating curve)
- Operating Humidity
- 5% to 95% RH non-condensing
- Cooling
- Free air convection
Physical
- Dimensions
- 63 x 125.2 x 113.5 mm (W x H x D)
- Weight
- 0.42 kg
Approvals
- Safety Standards
- EAC TP TC 004 approved
- MTBF
- 1376.5K hrs min. Telcordia SR-332 (Bellcore); 499.5K hrs min. MIL-HDBK-217F (25 °C)
Other
- Battery Capacity Range
- 4 Ah to 135 Ah (external)
- Battery Protection
- Deep discharge cut-off below 21 V; over discharge current 42 A to 46 A cut-off after 3 s; reverse polarity protected
- Signals
- Relay contacts and LEDs for DC bus OK, battery fail and battery discharge (30 V DC / 1 A)
- Series
- DUPS40
- Warranty
- Manufacturer warranty under MEAN WELL's terms: 3 years. How claims work
Product attributes and shipping details
| Brand | MEAN WELL |
|---|
Downloads
Documentation
- DUPS40 series datasheetDatasheet · Family · meanwell.comDownload
Certificate and compliance document (1)
- DUPS40 CE declaration of conformityCertificate · Family · meanwell.comDownload
Series documents can differ from your exact model. Report a wrong or missing file
Questions about this product
What input voltage does the DUPS40 accept?
MEAN WELL lists 24 V DC nominal (24 V to 29 V DC) from the DC bus for this model.
What battery charging does the DUPS40 provide?
The datasheet gives battery charging voltage 24 V battery (2 x 12 V in series or 1 x 24 V), charging current 2 A.
Ask about this modelSetup, compatibility, what is in the box
Answers are automated. Do not enter personal or account details.
Looking for an alternative?
We list alternatives only when we have checked they suit the same job. Compare other models in the category, or ask us to suggest one for your site.