ABB 1SDA051090R1 Load Center Circuit Breaker

1. Product type and positioning

Model analysis:

1SDA: ABB low-voltage switchgear and control product series identification (commonly seen in circuit breakers, contactors, etc.).

051090R1: Specific model code, which may include product version (such as R1 for the first version), rated parameters and other information.

Load Center Circuit Breaker: Specifically defined as a load center circuit breaker, used to distribute electrical energy and provide circuit protection in a low-voltage power distribution system.

Application scenarios:

Mainly used in power distribution systems (such as distribution boxes and distribution cabinets) in industrial or commercial buildings. As a control and protection device for power supply lines or branch circuits, it can be installed in a load center (Load Center) to centrally manage the on/off and overload/short-circuit protection of multiple circuits.

2. Possible functions and features

1. Core functions

Circuit protection:

With overload protection (long-delay tripping, LS) and short-circuit protection (instantaneous tripping, I), some models may support short-circuit short-delay tripping (S), i.e. LSI three-stage protection, to ensure accurate action in different fault scenarios.

The type of tripper may be electronic (such as ABB PR series) or thermal magnetic. Electronic trippers support adjustable parameters to meet different load requirements.

On-off control:

Manual or electric operation, used for normal circuit connection and disconnection. Some models support remote control (such as access to PLC system through auxiliary contacts and communication modules).

Isolation function:

Comply with electrical isolation standards, provide obvious disconnection points after disconnection, and ensure maintenance safety.

2. Key parameter speculation

Rated current (In):

The frame current of common load center circuit breakers is 630A, 1250A, 1600A, etc. Please refer to the product manual for details. For example, if the model contains implicit parameters, it may be 1250A or 1600A.

Rated voltage (Ue):

Applicable to AC 400V/690V system (common in industry) or 230V/400V (civilian/commercial), which needs to be confirmed according to the application scenario.

Short-circuit breaking capacity (Icu/Ics):

ABB's low-voltage circuit breakers usually have a breaking capacity of 36kA, 50kA, 70kA, etc. (depending on the model level), and high-end products can reach more than 100kA.

Number of poles:

Commonly 3-pole (3P) or 4-pole (4P), used in three-phase systems or three-phase four-wire systems with neutral lines.

3. Structure and design

Modular design:

It can adapt to the installation size of standard distribution cabinets, support drawer-type or fixed installation, and facilitate maintenance and replacement.

Arc extinguishing system:

Adopt ABB's patented arc extinguishing technology (such as rotating arc extinguishing chamber) to quickly extinguish the arc, reduce contact wear, and improve breaking reliability.

Intelligent monitoring (optional):

Some models may integrate intelligent trip units (such as ABB Ability™ series), support current, voltage, temperature monitoring, as well as fault recording and communication functions (Modbus, Profibus, etc.).