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Siemens EQ8681 Molded Case Circuit Breaker

  • 100A
  • 2 Pole
  • Bolt-On
Siemens EQ8681
Molded Case Circuit Breaker
Brand Siemens
SKU EQ8681
Select Item Condition
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  • 100A
  • 2 Pole
  • Bolt-On

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Siemens EQ8681 2 Pole Circuit Breaker

Siemens EQ8681 - 100A 2 Pole Molded Case Circuit Breaker

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$53.92 No Stock

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Description

Built for residential applications, the Siemens EQ8681 serves as a 100A primary disconnect for home electrical systems. This thermal-magnetic breaker provides essential long-time and instantaneous trip functions. It installs into Siemens EQ and Ultimate load centers, including PL, ES, PN, and SN series panels. For modern upgrades, this unit is commonly substituted by the MBK100A conversion kit. Rated at 22kAIC at 120/240V, this bolt-on main breaker ensures high-capacity fault clearing.

Specifications

Key specifications
Brand Siemens
Part Number EQ8681-R
Series EQ
Amperage 100A
Poles 2
Mounting Style Bolt-On
Voltage 120/240VAC
Phase 1
AIC Rating 22kA @ 120/240VAC
Fit and installation
Terminal Type Lugs
For Use With Siemens EQ Load Centers, Siemens Ultimate Load Centers (PL, ES, PN, SN)
Wire Gauge 4 AWG - 3/0 AWG (Cu/Al)
Max Wire 3/0 AWG
Min Wire 4 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Standards and features
Accessories Lugs Included
Standards CSA C22.2 No. 5, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features Main Breaker, Common Trip, High Interrupting Capacity

Product FAQs

5 answers
Can I use the EQ8681 in a GE or Eaton panel?

No. The Siemens EQ8681 is engineered specifically for Siemens EQ and Ultimate series load centers (including PL, ES, PN, and SN). Installing it in a GE, Eaton, or other third-party panel violates safety codes and can create electrical hazards.

Is there a modern conversion kit that replaces the EQ8681?

Yes. For modern panel upgrades or replacements, the EQ8681 is commonly substituted by the Siemens MBK100A main breaker conversion kit.

Is the EQ8681 rated for use as a primary disconnect?

Yes. The EQ8681 is UL 489 listed and engineered specifically to serve as a main breaker or primary disconnect in compatible Siemens residential and light commercial load centers.

How is the EQ8681 installed in the load center?

The EQ8681 is a bolt-on main breaker. It secures directly to the panel's bus connections using bolts, providing a highly secure and reliable connection for the primary electrical feed.

Why is it important to verify panel compatibility before installing the EQ8681?

Even if a breaker physically fits onto a bus bar, it must be UL-listed for that specific enclosure. Using the EQ8681 in unapproved panels can lead to poor contact points, arcing, overheating, and voided warranties. Always check your panel's compatibility chart.

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