Battery Backup Unit | ABB SB821 3BSE018109R1 AC 800M
Manufacturer: ABB
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Part Number: SB821
Condition：New with Original Package
Product Type: Battery Backup Units
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Country of Origin: Sweden
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
ABB SB821 3BSE018109R1 Battery Backup Unit
The ABB SB821 (3BSE018109R1) is an external lithium battery backup unit engineered for ABB AC 800M controllers. It supplies extended backup power to preserve controller memory data and maintain real-time clock operation during power interruptions. The unit is designed for secure DIN rail installation inside industrial control cabinets.
Battery Specifications and Backup Performance
The unit utilizes a single non-rechargeable ANSI Size D / IEC R20 lithium battery with a nominal voltage of 3.6 V DC and a capacity of 16 Ah, containing 5.6 g of lithium content. It provides a minimum backup duration of one month, varying depending on the specific controller model and operating conditions.
Connection and Physical Integration
The SB821 connects directly to the compatible AC 800M processor using an included TK821V020 connecting cable measuring 2 meters in length. Physical dimensions measure 85.6 mm in width, 136 mm in height, and 51 mm in depth, with a total net weight of approximately 600 g including the battery and cable, protected by an IP20 rating.
Parameter Specifications
| Parameter | Specification |
|---|---|
| Model | SB821 |
| Brand | ABB |
| Part Number | 3BSE018109R1 |
| Product Type | External Battery Backup Unit |
| Compatible System | ABB AC 800M |
| Main Function | Extended Controller Memory Backup |
| Battery Type | Non-rechargeable Lithium Battery (ANSI Size D / IEC R20) |
| Nominal Battery Voltage | 3.6 V DC |
| Battery Capacity | 16 Ah |
| Backup Duration | Minimum 1 month (application dependent) |
| Connection Cable | TK821V020 (2 m length) |
| Mounting Type | DIN Rail Mounting |
| Dimensions (W x H x D) | 85.6 x 136 x 51 mm |
| Weight | 600 g (including battery and cable) |
| Protection Rating | IP20 |
Frequently Asked Questions
Q: What is the primary function of the ABB SB821 unit? A: It provides extended memory backup power and maintains real-time clock operation for ABB AC 800M controllers during power outages.
Q: What type of battery does the SB821 use? A: It uses a non-rechargeable ANSI Size D / IEC R20 lithium battery with a 3.6 V DC rating and 16 Ah capacity.
Q: What cable is included for connecting to the controller? A: It is supplied with a 2-meter TK821V020 connecting cable.