Free Shipping Over $99
Siemens E43B100 Molded Case Circuit Breaker
- 100A
- 3 Pole
- Bolt-On
Siemens
E43B100
Molded Case Circuit Breaker
Brand
Siemens
SKU
E43B100
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens E43B100 - 100A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Similar Items
70A 3 Pole Molded Case Circuit Breaker
50A 3 Pole Molded Case Circuit Breaker
40A 3 Pole Molded Case Circuit Breaker
Description
Built for industrial and commercial power systems, this 100A bolt-on circuit breaker offers robust thermal-magnetic protection. It installs seamlessly into Siemens Sentron panels, ITE F-Series panelboards, and SB switchboards. The three-pole unit features a 25 kAIC rating at 240VAC and 18 kAIC at 480VAC, ensuring safe operation during fault conditions. It includes factory-installed load lugs and supports reverse feeding. For new installations, this legacy frame is replaced by the ED43B100.Specifications
| Brand | Siemens |
|---|---|
| Part Number | E43B100-R |
| Series | E4 |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 30kA @ 250VDC |
| Frame Type | E4 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards, SB Switchboards, ITE F-Series Panelboards |
| Wire Gauge | 10-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 10 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Lugs (Factory Installed) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, 40C Ambient Calibration |
Product FAQs
6 answersIs the E43B100 a direct replacement for older ITE breakers?
Yes, the Siemens E43B100 directly replaces legacy ITE and Gould E43B100 circuit breakers. It fits the same physical footprint in existing panelboards. For new installations, the ED43B100 is the modern equivalent.
Which panelboards are compatible with the E43B100 breaker?
This bolt-on breaker is designed for use in Siemens Sentron panelboards, SB switchboards, and legacy ITE F-Series panelboards. It requires a bolt-on connection directly to the panel bus.
Can the E43B100 be reverse fed?
Yes, this thermal magnetic breaker supports reverse feeding. It can be wired with the line or load connections on either side without affecting the trip characteristics.
Is this breaker suitable for HVAC and refrigeration equipment?
Yes, the E43B100 is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment that requires this specific UL listing for group motor installations.
What wire sizes are accepted by the standard lugs?
The factory-installed lugs accept 10 AWG to 1/0 AWG copper or aluminum wire. Ensure all connections are torqued to the specifications listed on the breaker faceplate during installation to prevent overheating.
Does this breaker have adjustable trip settings?
No, the E43B100 features fixed thermal and fixed magnetic trip elements. The long-time and instantaneous trip functions cannot be adjusted in the field.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Search
Rating
2 reviews
- JJJohn J.Rated 5 out of 5 stars2/26/22Fast service and great quality
Fast service and great quality
- KHKyle H.Rated 5 out of 5 stars12/23/19Great quality
Breaker arrived quickly and for a much better price than I could find anywhere else online. Breaker works much better than my old one did