Mean Well DDR-120B-24 DC-DC Converter - 120W - 16.8~33.6V in 24V out | New Zealand Distributor

The DDR-120B is a 120W Mean Well DC-DC converter (input: 16.8~33.6VDC, operating temperature: -40~+85°C).

Key Features

✓ Input voltage: 16.8~33.6VDC
✓ Output voltage (max): 24V
✓ Rated output current: 5A
✓ I/O isolation: 500V
✓ Operating temperature: -40~+85°C
✓ Safety certifications: CE, EMC
✓ 2 year warranty

Frequently Asked Questions

Can I use the DDR-120B-24 to power 24V automation devices from a 24V battery-backed bus?

Yes. The DDR-120B-24 accepts 16–33V DC input and provides an isolated 24V output at up to 5A (120W). This is useful when you need galvanic isolation between a 24V UPS or battery bus and sensitive 24V PLC, relay, or sensor circuits to prevent ground loops and noise coupling.

Is the DDR-120B-24 suitable for powering 24V actuators and valve controllers in process plants?

The DDR-120B-24 delivers 24V at 5A (120W) with 4KVdc isolation from a 16–33V input bus. This capacity handles most individual actuator or valve controller loads. The -40°C to +85°C range and fanless design suit harsh plant environments without requiring additional cooling.

Can I use this converter to create an isolated 24V supply for a DIN rail data acquisition system?

The DDR-120B-24 is well suited for this. Its 4KVdc input-to-output isolation prevents noise from the main DC bus from reaching sensitive analog measurement circuits. At 120W, it can power a data logger, signal conditioners, and several analog input modules simultaneously.

Does the DDR-120B-24 require derating at elevated temperatures inside a control cabinet?

The DDR-120B-24 is rated for operation up to +85°C, but like most power converters it may derate output at the upper end of its temperature range. At typical cabinet temperatures of 40–50°C, you can expect full 120W output. Consult the derating curve in the datasheet for exact values above 70°C.

Is the DDR-120B-24 a good choice for powering 24V LED panel indicators from a 24V DC bus?

While it works for that purpose, the DDR-120B-24 provides 120W at 5A, which is significantly more than most LED indicator panels require. If your indicator load is only a few watts, a smaller model like the DDR-15G-24 (15W) or DDR-30G-24 (30W) may be more cost-effective and space-efficient.

Payment & Security

Payment methods

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Model	Power	Voltage	Current	IP Rating
Mean Well DDR-120B-48 DC-DC Converter - 120W - 16.8~33.6V in 48V out 2.5A	120W	48V	2.5A	Indoor	View
Mean Well DDR-120B-12 DC-DC Converter - 120W - 16.8~33.6V in 12V out 10A	120W	12V	10A	Indoor	View

Please log in to write a review.

{ "id":8441747177771, "variants" :[{ "context":"default", "variant_id": 45706952573227, "sku":"DDR-120B-24", "inventory_qty" : 3, "customer" :false, "custom_html" :"\u003ca class=\"text-current logged-out-price logged-out\" href=\"https:\/\/wellforces.co.nz\/customer_authentication\/redirect?locale=en\u0026region_country=NZ\"\u003e\n \u003cspan \u003ePlease \u003c\/span\u003e \u003cspan class=\"login-text\"\u003eLogin\u003c\/span\u003e \u003cspan\u003e for Pricing\u003c\/span\u003e\n \u003c\/a\u003e", "volume_html" :"\u003cvolume-pricing class=\"parent-display inside_product_form\" id=\"volume-pricing-main\" \u003e\u003c\/volume-pricing\u003e" } ] }

Key Features

✓ Input voltage: 16.8~33.6VDC

✓ Output voltage (max): 24V

✓ Rated output current: 5A

✓ I/O isolation: 500V

✓ Operating temperature: -40~+85°C

✓ Safety certifications: CE, EMC

✓ 2 year warranty

Mean Well DDR-120B-24 DC-DC Converter - 120W - 16.8~33.6V in 24V out 5A

Select model — 16 in this family

Key Features

Frequently Asked Questions

Payment & Security

Other DDR-120B Models

Write a review

Your cart

Mean Well DDR-120B-24 DC-DC Converter - 120W - 16.8~33.6V in 24V out 5A

Key Features

Company Information

Services and Support

Choose options