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Siemens ED21B020 Molded Case Circuit Breaker

  • 20A
  • 1 Pole
  • Bolt-On
Siemens ED21B020
Molded Case Circuit Breaker
Brand Siemens
SKU ED21B020
Select Item Condition
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  • 20A
  • 1 Pole
  • Bolt-On

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Siemens ED21B020 1 Pole Circuit Breaker

Siemens ED21B020 - 20A 1 Pole Molded Case Circuit Breaker

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$117.60 In Stock

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Description

Built for commercial and industrial applications, the Siemens ED21B020 is a 1-pole, 20A molded case circuit breaker from the Sentron ED2 family. It provides thermal-magnetic protection for branch circuits. This bolt-on MCCB installs into Siemens P2, P3, and Sentron panelboards, as well as compatible switchboards. It features load side lugs and accepts 14-10 AWG copper or 12-10 AWG aluminum wiring. Rated for 10kAIC at 120VAC, the unit includes fixed long-time and instantaneous trip functions.

Specifications

Key specifications
Brand Siemens
Part Number ED21B020
Series ED2
Amperage 20A
Poles 1
Mounting Style Bolt-On
Voltage 120VAC, 125VDC
Phase 1
AIC Rating 10kA @ 120VAC, 5kA @ 125VDC
Fit and installation
Frame Type ED
Terminal Type Lugs
For Use With Siemens P2, P3 Panelboards, Sentron Panelboards, Switchboards
Wire Gauge 14-10 AWG (Cu), 12-10 AWG (Al)
Max Wire 10 AWG
Min Wire 14 AWG (Cu), 12 AWG (Al)
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
Available Options Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release
Accessories Load Side Lugs
Standards CSA C22.2 No. 5, HACR Rated, NEMA AB 1, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Reverse Feed, SWD Rated

Product FAQs

7 answers
Which panelboards accept the ED21B020 circuit breaker?

This bolt-on MCCB is designed for use with Siemens P2 and P3 panelboards, Sentron panelboards, and compatible Siemens switchboards.

Does the Siemens ED21B020 replace older I-T-E breakers?

Yes. Siemens manufactures the Sentron ED frame, and the ED21B020 serves as a direct replacement for legacy I-T-E circuit breakers sharing the exact same catalog number.

Can the ED21B020 be used in DC circuits?

Yes, this breaker is rated for 125VDC applications and provides an interrupting capacity of 5kAIC at that voltage.

Are the trip settings adjustable on the ED21B020?

No, this breaker features a thermal magnetic trip unit with fixed long-time and fixed instantaneous trip functions.

Is the ED21B020 suitable for reverse feed installations?

Yes, this Sentron ED2 frame breaker is approved for reverse feed applications.

Is the ED21B020 HACR rated?

Yes, this breaker carries an HACR rating, making it approved for use with heating, air conditioning, and refrigeration equipment.

Does this breaker carry an SWD rating?

Yes, the ED21B020 is Switching Duty (SWD) rated, meaning it is approved for regularly switching 120VAC fluorescent lighting loads.

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Reviews

4.0
Rated 4.0 out of 5 stars
Based on 1 review
Total 5 star reviews: 0 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Rating
Ratings
1 review
  • MC
    Matthew C.
    Verified Buyer
    I recommend this product
    Rated 4 out of 5 stars
    5/5/26
    Life Saver!

    Needed to replace a breaker feeding an AC unit in order to pass inspection. Breaker shipped in time and in great condition. We met our deadline resulting in a green tag (sigh of relief).