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Matched our existing hardware and fit as expected. Clean install.
Maintenance · Retrofit work
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circuit-breaker
Siemens JKL2B400 400A 3P 600V Circuit Breaker | AmpState
★★★★★
| Part Number | JKL2B400 |
| Amperes | 400 |
| Poles | 3 |
| Voltage | 600 |
| Product Type | circuit-breaker |
Regular price
$10.00
Sale price
$10.00
Regular price
Unit price
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Seamless online shopping experience guaranteed with easy shipping and returns policy.
Shop with Confidence: Our Products come with a Reliable Year-Long Warranty.
Siemens JKL2B400 400A 3P 600V Circuit Breaker | AmpState
Regular price
$10.00
Sale price
$10.00
Regular price
Unit price
Product description
Shipping
Siemens JKL2B400 is built for everyday electrical work, delivering dependable circuit protection for panelboards, load centers, and distributed electrical systems. This 400 A, 3-pole breaker is designed to handle demanding loads in commercial and light industrial environments while keeping your electrical distribution organized and safe.
Key specifications
- Manufacturer: Siemens
- Part Number: JKL2B400
- Product Type: Circuit Breaker
- Amperage: 400 A
- Poles: 3
- Voltage: 600 V
Why this breaker stands out
What makes the JKL2B400 essential for retrofit and maintenance projects is its fixed part number. When you’re updating or expanding an existing installation, sticking with a consistent part number prevents compatibility surprises and reduces downtime during replacements. Built for reliable performance, this Siemens breaker integrates smoothly into standard panelboards and load centers, supporting stable distribution across three phases at up to 600 volts.
Ideal use cases
- Retrofit projects where part-number consistency is critical to avoid mismatch and re-engineering
- Maintenance planning for aging panels in commercial facilities
- Protection of multiphase distribution circuits in 600V systems
- Replacement in panelboards and load centers that require robust 400 A, 3-pole protection
Compatibility and support
Need help matching a part number or confirming compatibility with your panel? AmpState offers support to verify fit and ensure you’re selecting the right breaker for your specific configuration. This item is available from AmpState, making it easy to source and stock for ongoing maintenance schedules.
Practical considerations and tips
- Plan maintenance around a fixed part number to streamline inventory and reduce the risk of de‑rating or replacement delays.
- For retrofits, confirm that your panelboard or load center supports a 400 A, 3-pole 600 V breaker of the JKL series to ensure seamless operation.
- Store replacement breakers where accessibility is prioritized to minimize disruption during service windows.
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