Siemens CFD62B250 Molded Case Circuit Breaker
- 250A
- 2 Pole
- Unit Mount
Quantity
Siemens CFD62B250 - 250A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for heavy-duty commercial and industrial power distribution, the Siemens CFD62B250 is a 2-pole, 250A molded case circuit breaker. It features a fuseless, current-limiting design with blow-apart contacts to rapidly clear severe electrical faults. This FD-Frame breaker installs into Siemens P1, P2, and P3 panelboards, as well as motor control centers, using a secure bolt-on connection. It provides reliable fixed thermal and adjustable magnetic trip functions for customized protection.Specifications
| Brand | Siemens |
|---|---|
| Part Number | CFD62B250 |
| Series | CFD6 |
| Amperage | 250A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480VAC, 100kA @ 600VAC, 30kA @ 250VDC |
| Frame Type | CFD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (P1, P2, P3), Switchboards, Motor Control Centers, Enclosures |
| Wire Gauge | 6 AWG - 350 kcmil (Cu), 4 AWG - 350 kcmil (Al) |
| Max Wire | 350 kcmil |
| Min Wire | 6 AWG (Cu), 4 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | HACR Rated, IEC 60947-2, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, HACR Rated, Non-Interchangeable Trip, Fuseless |
Product FAQs
7 answersWhat does the C in the CFD62B250 catalog number indicate?
The C designates this as a current-limiting circuit breaker. It features a fuseless design that restricts the amount of fault energy let-through during a short circuit, providing a higher interrupting capacity than standard FD-frame breakers.
Which lug kit is required for the CFD62B250?
The standard line and load lug kit for 250A Siemens FD-frame breakers is the TA1FD350A. This kit accepts one copper or aluminum conductor from 6 AWG to 350 kcmil per phase.
What types of enclosures and panels accept this breaker?
The CFD62B250 is designed for unit mounting in Siemens Sentron P1, P2, and P3 panelboards, as well as compatible switchboards, motor control centers, and standalone enclosures that accommodate FD-frame breakers.
How does the CFD62B250 differ from the FD62B250 or HFD62B250?
All three are 250A, 2-pole FD-frame breakers, but they have different interrupting ratings. The FD62B250 is the standard-interrupting version, the HFD62B250 is high-interrupting, and the CFD62B250 is the ultra-high, current-limiting version rated for 200kA at 480VAC.
How is the trip unit configured on this breaker?
The CFD62B250 features a thermal-magnetic trip unit with a fixed thermal setting for continuous overload protection and an adjustable magnetic setting to fine-tune the instantaneous short-circuit response.
Can the CFD62B250 be used in DC power systems?
Yes, this breaker is rated for use in DC applications up to 250VDC with an interrupting capacity of 30kA. When used on 250VDC systems, standard practice requires wiring one pole on each leg of the supply circuit.
Does this breaker mount to a DIN rail?
No, the CFD62B250 is a bolt-on, unit-mount molded case circuit breaker. It requires specific mounting hardware to bolt directly to the bus or mounting pan in a panelboard or enclosure, rather than snapping onto a DIN rail.
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.