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3WA1112-3AB12-0AA0
Air Circuit Breaker 3WA1, FS 1, ETU300, 4P N left side fixed
- Stock status:
- Call for availability
- Manufacturer:
- Siemens
- Product code:
- 3WA1112-3AB12-0AA0
Main documents
- Product datasheet
- Instruction sheet
- Catalogue
Related products
| Product | |
| Article Number (Market Facing Number) | 3WA1112-3AB12-0AA0 |
| Product Description | Fixed-mounted circuit breaker IEC 60947-2, frame size 1, 4-poles, N-pole left, In=1250A up to 690V AC 50/60Hz, breaking capacity S Icu=66/50kA at 500/690V, Trip unit ETU300 LSI optimized for standard applica- tions, without display Protection LT, ST, INST, include N-protection, (internal N-sensor available), incl. trip alarm switch (1xCO), rear connection horizontal, without Com & metering function Manual operating mechanism with mechanical closing, without Spring charging motor, Ready-to-close signal. switch, Auxiliary switches 2NO+2NC, without Closing coil (CC), manual operating mechanism with mechanical closing, without Remote trip alarm reset coil (RR), without 2nd shunt trip, without 1st Shunt trip |
| Product family | 3WA1 Air Circuit Breakers/Non-Aut. Air Circ. Br. up to 6300 A (AC), IEC |
| Product Lifecycle (PLM) | PM300:Active Product |
| Price data | |
| Price Group / Headquarter Price Group | E4A / 1CE |
| List Price | Show prices |
| Customer Price | Show prices |
| Metal Factor | LAO—– |
| Additional Product Information | ||
| EAN | Not available | |
| UPC | Not available | |
| Commodity Code | 85362090 | |
| LKZ_FDB/ CatalogID | LV10 | |
| Product Group | X01C | |
| Group Code | P360 | |
| Country of origin | Czech Republic | |
| RoHS Conformity Date | Since: 31/12/99 | |
| Product class | B: return restricted, please contact your Siemens partner/contact | |
| WEEE (2012/19/EU) Take-Back Obligation | No | |
| REACH Art. 33 Duty to inform according to the current list of candidates | ||
| SCIP number | Not available | |
Product Description
3WA1112-3AB12-0AA0
The Siemens 3WA1112-3AB12-0AA0 is a fixed-mounted circuit breaker designed for reliable and efficient protection in industrial and commercial electrical systems. It conforms to IEC 60947-2 standards and is a part of the 3WA1 Air Circuit Breakers series.
Key Features and Specifications:
- Number: 3WA1112-3AB12-0AA0
- Mounting Type: Fixed-mounted
- Frame Size: 1
- Poles: 4-pole configuration (with N-pole positioned to the left)
- Rated Current (In): 1250 A
- Voltage Rating: Up to 690 V AC (50/60 Hz)
Breaking Capacity (Icu):
- 66 kA at 500 V
- 50 kA at 690 V
Features and Functionalities
Trip Unit:
- Integrated ETU300 LSI trip unit optimized for standard applications
- Provides long-time (LT), short-time (ST), instantaneous (INST) protection
- Includes N-protection with an internal N-sensor
Connections:
- Rear horizontal connections for streamlined installation
Alarm and Indicators:
- Equipped with a trip alarm switch (1xCO)
Manual Operating Mechanism:
- Operated with a mechanical closing mechanism
- Does not include a spring charging motor
Auxiliary Features:
- Includes 2NO and 2NC auxiliary switches
Excludes:
- Closing coil (CC)
- Remote trip alarm reset coil (RR)
- Shunt trips
Display and Communication:
- Does not include display, communication, or metering functionalities
Additional Product Information:
- Product Family: 3WA1 Air Circuit Breakers for up to 6300 A (AC), IEC
- Product Lifecycle (PLM): Active product (PM300)
- Commodity Code: 85362090
- Catalog ID: LV10
- Group Code: P360
Applications
The 3WA1112-3AB12-0AA0 circuit breaker is ideal for:
- Systems requiring high fault-breaking capacity (up to 66 kA)
- Industrial and commercial settings with four-pole configurations for balanced electrical protection
- Standard applications requiring reliable LT, ST, and INST protection
Summary
This product offers robust safety and operational efficiency, meeting the demands of complex electrical distribution systems.
Frequently Asked Questions
Which is Better: ACB or MCCB?
✅ Current Rating: ACBs are designed for higher current ratings than MCCBs, making them ideal for circuits with larger current demands.
✅ Adjustable Tripping: MCCBs offer adjustable tripping thresholds, which makes them versatile and suitable for a variety of circuit applications. This flexibility can give MCCBs an advantage in systems where different levels of protection are required.
In summary, ACBs are often preferred for high-current circuits, while MCCBs provide flexibility and adaptability in a range of applications. Each type has its strengths depending on the specific needs of the electrical system.
When Should You Use an ACB (Air Circuit Breaker)?
✅ Air Circuit Breakers (ACBs) are ideal for high-voltage applications, such as substations and power transmission systems, where they offer dependable protection by effectively interrupting heavy fault currents. Their robust design makes them a top choice for safeguarding critical electrical systems that require high fault-clearing capabilities.
What is the Purpose of a WL Circuit Breaker?
✅ The Siemens WL power circuit breaker is designed for low-voltage switchgear and switchboard applications, offering essential protection against short circuits and faults to prevent electrical damage or fire hazards. Commonly used as incoming-feeder, coupler, and outgoing-feeder circuit breakers, WL circuit breakers serve a wide range of applications in industrial, commercial, and infrastructure settings. They are a reliable choice for ensuring the safety and efficiency of electrical installations.
Are Siemens WL Circuit Breakers 100% Rated?
✅ Yes, Siemens WL circuit breakers are 100% rated, meaning they are designed for continuous operation at their full current rating without requiring external heat sinks. These breakers are engineered to meet the rigorous demands of standard industrial and commercial applications, ensuring reliable performance and protection for continuous, high-current usage.
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