Description
Technical Specifications
| Parameter |
Detail |
| Brand |
ABB |
| Model |
DSSR120 (Part No. 48990001-LH) |
| Series |
MasterPiece 200 / Advant System |
| Product Name |
DC/DC Power Supply Unit / Voltage Regulator |
| Country of Origin |
Sweden |
| Lifecycle Status |
Legacy / Industrial Support |
| Dimensions |
263 mm x 88 mm x 138 mm |
| Weight |
1.0 kg |
| Manufacturing Location |
Europe / Sweden |
| Power Consumption |
140 W Input / 5 VDC Output (20 A) |

Product Introduction
The ABB DSSR120 (Part Number: 48990001-LH) is a high-reliability power supply unit and voltage regulator engineered specifically for ABB legacy control systems, including the MasterPiece 200 and Advant industrial automation platforms. Designed to deliver stable regulated power, it accepts a DC input range and provides a robust 5 VDC output at 20 A to support sensitive processor racks, control logic boards, and communication cards. Built with industrial-grade components, it ensures long-term operational continuity in critical environments such as power generation, chemical processing, and heavy manufacturing.
Frequently Asked Questions
⚡ What is the primary function of the DSSR120 module?
It functions as a specialized DC/DC power supply and voltage regulator, stepping down and stabilizing input voltage to deliver reliable 5 VDC power to system controller racks.
🔌 Which ABB control platforms typically utilize this power supply?
It is predominantly deployed within legacy ABB MasterPiece and Advant OCS control system architectures.
⚙️ How does the unit integrate into maintenance schedules?
Due to its critical role in system uptime, it is frequently included in long-term preventive maintenance kits for component refreshing, such as capacitor and fuse inspections.
Alternative Model Recommendations
- ABB DSSR122 (Part No. 48990001-NK)
- ABB DSSR130
- ABB SD821 Power Supply Unit
- ABB SD823 Power Supply Unit
- ABB Advant Controller 450 Power Supply
- Siemens SITOP Power Supply Series
- Phoenix Contact Quint Power Supply
- Rockwell Automation 1756-PA72 ControlLogix Power Supply
- Schneider Electric Modicon Quantum Power Supply
- Omron S8FS Industrial Power Supply
At Newplcdcs, we specialize in providing high-quality spare parts for Distributed Control Systems (DCS) and Programmable Logic Controllers (PLC). Our comprehensive product portfolio includes parts from approximately 20 leading brands, such as ABB, Bently Nevada, Honeywell, GE, Yokogawa, Allen Bradley, Foxboro, Ovation, Hima, Emerson, Triconex, Woodward, ICS Triplex, Bachmann, and Schneider. This focused expertise allows us to offer in-depth solutions in the automation sector, setting us apart from many competitors and ensuring we deliver the most advanced and reliable products to our clients.
Contact Information
Frequently Asked Questions
Is our price competitive?
Newsplcdcs collaborates with over 50 countries worldwide. as a leading supplier in china, we can provide significant discounts to customers based on market demand.
What is the warranty period?
We offer a standard one-year warranty for all new and original items.
What payment methods do we accept?
We accept 100% t/t (telegraphic transfer) before shipping. for items with a lead time, a 30% deposit is required in advance, with the remaining 70% balance due before shipping. if you have an agent in china, please contact us for rmb transfer.
What shipping methods do we use?
We primarily utilize carriers such as fedex, dhl, ups, bre, etc. if you have an account with any of these carriers, you can arrange the shipping yourself. additionally, we offer free shipping to china freight forwarders.
What is our delivery time?
Typically, delivery takes around 1-3 days after receiving the advance payment. for items with a quoted lead time, delivery will occur as per the specified lead time.
How do we package the goods?
Our packaging process involves multiple layers of protection. initially, the product is placed in its original box, sealed with a label. then, we add a layer of bubble wrap to safeguard against collisions during transportation. finally, all products are securely packed in sturdy boxes for further protection.
How can customers contact us and request a quote?
Customers can inquire via email, whatsapp, wechat, skype, or any preferred communication platform. simply reach out to us, and we’ll promptly provide a quote tailored to your needs.