Free Shipping Over $99
Siemens ED21B040 Molded Case Circuit Breaker
- 40A
- 1 Pole
- Bolt-On
Siemens
ED21B040
Molded Case Circuit Breaker
Brand
Siemens
SKU
ED21B040
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens ED21B040 - 40A 1 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens ED21B040 - 40A 1 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | ED21B040 |
| Series | ED2 |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC, 5kA @ 125VDC |
| Frame Type | ED |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P2, P3 Panelboards, Sentron Panelboards, Switchboards |
| 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 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 |
Sold out
Quantity
Siemens ED21B040 - 40A 1 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | ED21B040-R |
| Series | ED2 |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC, 5kA @ 125VDC |
| Frame Type | ED |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P2, P3 Panelboards, Sentron Panelboards, Switchboards |
| 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 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 |
Similar Items
30A 1 Pole Molded Case Circuit Breaker
25A 1 Pole Molded Case Circuit Breaker
60A 1 Pole Molded Case Circuit Breaker
Description
Operating within the Sentron ED2 series, this 40A single-pole MCCB handles demanding commercial electrical loads. The Siemens ED21B040 ensures consistent power distribution and circuit protection across 120VAC and 125VDC networks. Designed with a secure bolt-on mounting style, it fits perfectly into Siemens Sentron panelboards and SB switchboards. The unit comes equipped with load side lugs for straightforward wiring. It carries a 10kAIC rating for standard commercial fault protection.Specifications
| Brand | Siemens |
|---|---|
| Part Number | ED21B040 |
| Series | ED2 |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC, 5kA @ 125VDC |
| Frame Type | ED |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P2, P3 Panelboards, Sentron Panelboards, Switchboards |
| 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 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 |
Product FAQs
8 answersWhich panelboards are compatible with the Siemens ED21B040 circuit breaker?
This ED-frame breaker is designed for use in Siemens P2 and P3 panelboards, Sentron panelboards, and Siemens switchboards.
What wire sizes are accepted by the lugs on the ED21B040?
The factory-installed lugs accept copper or aluminum wire ranging from 10 AWG up to 1/0 AWG. Ensure proper torque specifications are followed during installation.
Can the ED21B040 be used in DC applications?
Yes, this breaker is rated for 125VDC systems with a maximum interrupting capacity of 5kAIC, in addition to its standard 120VAC rating.
How does the ED21B040 mount into the panelboard?
It features a bolt-on connection type, requiring it to be physically bolted to the panelboard bus for a secure, vibration-resistant installation.
Are the trip settings on the ED21B040 adjustable?
No, this thermal-magnetic breaker features fixed thermal (long-time) and fixed magnetic (instantaneous) trip settings, meaning the 40A trip point cannot be altered in the field.
What is the Grainger cross-reference number for the Siemens ED21B040?
The Grainger cross-reference part number for this 40A 1-pole breaker is 6FMY5.
Is the Siemens ED21B040 suitable for HVAC equipment?
Yes, this breaker is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment that requires a 40A 1-pole breaker.
What breaker family and frame type does the ED21B040 belong to?
This 40A breaker is part of the Siemens Sentron family and utilizes the standard ED frame design.
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.