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circuit-breaker

Siemens Q140 40A 1P Circuit Breaker | AmpState

Part Number Q140
Amperes 40
Poles 1
Product Type circuit-breaker
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Manufacturer :Siemens
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Replacement available
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Picture available on request
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CSA / UL Approved
Regular price $33.00
Sale price $33.00 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.

Icon
Secure transaction
Icon
FREE & fast shipping on orders over $49
Icon
CSA approved with 1 year warranty
Icon
30 day returns
Siemens Q140 40A 1P Circuit Breaker | AmpState

Siemens Q140 40A 1P Circuit Breaker | AmpState

Regular price $33.00
Sale price $33.00 Regular price
Unit price
Product description
Shipping

Siemens Q140 40A 1P Circuit Breaker from AmpState delivers dependable overcurrent protection for panelboards, load centers, and electrical distribution installations. Designed for retrofit work and maintenance planning where keeping the exact part number matters, the Q140 makes replacements straightforward and reduces downtime.

  • Manufacturer: Siemens
  • Part Number: Q140
  • Product Type: Circuit Breaker
  • Amperage: 40 A
  • Poles: 1 Pole

Where it fits

  • Panelboards
  • Load centers
  • Electrical distribution systems
  • Retrofit projects and maintenance planning where continuity of part numbers is essential

Why this matters

  • Part-number stability minimizes mis-orders and simplifies parts inventories during upgrades or repairs
  • Single-pole design keeps a compact footprint in crowded panel spaces
  • Siemens engineering ensures compatibility with Q-series breakers and many Siemens-panel configurations
  • 40 A protection suitable for common lighting and circuit runs in residential or light commercial installations

Practical usage tips

  • Verify the panelboard accepts Q140 breakers by matching the Siemens Q-series family; use for standard 1P, 40 A protection
  • Maintain replacement plans with the same part number across service windows to streamline ordering
  • Keep a spare Q140 on hand for proactive maintenance

Available from AmpState. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.

Contact sales@ampstate.com

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What Our Customers Say

4.9 (38 reviews)

General feedback we often hear from customers purchasing industrial electrical parts.

Verified

Consistent quality. We’ve added similar items to our regular reorder list.

MRO · Reorder

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Support is responsive when we have questions about fit or application.

Purchasing · Quick answers

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A reliable choice when we need industrial parts on short notice.

Service · Urgent replacement

Fast industrial sourcing support

Need help?

  • Request a quote
  • Need a BOM priced for your project
  • Not sure which part is correct
  • Need an equivalent or replacement
  • Send your part list and get a fast reply

Email us at sales@ampstate.com for pricing, availability, alternates, and project support.

Email for a quote Typical reply: same business day