The Square D DU221RB is a 2 Pole safety switch with a current rating of 30 Amps and a voltage rating of 240VAC. It has an interrupting rating of 100kAIC at 240V. The DU221RB has a surface mounting type and it is used for residential, commercial and industrial applications.
Specifications
Key specifications
Duty Rating
General Duty
Fusibility
Non-Fusible
Amperage
30 A
Voltage
240VAC
Electrical ratings
Poles
2
Phase
1
Interrupting Rating
100kAIC at 240V
Fit and installation
Mounting Type
Surface
Frame Type
DU
Wire Gauge
AWG 12 to AWG 6, Aluminum, AWG 14 to AWG 6, Copper
Number Of Wires
2
Protection and operation
Contact Configuration
DPST
Standards and features
Approval
UL
NEMA Rating
3R
Enclosure Material
Galvanized Steel
Product details
Series
E
Brand
Square D
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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.
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 25 reviews.
5.0
Rated 5.0 out of 5 stars
Based on 25 reviews
5
Rated out of 5 stars
24
Total 5 star reviews: 24
4
Rated out of 5 stars
1
Total 4 star reviews: 1
3
Rated out of 5 stars
0
Total 3 star reviews: 0
2
Rated out of 5 stars
0
Total 2 star reviews: 0
1
Rated out of 5 stars
0
Total 1 star reviews: 0
Reviews Summary
Generated by AI from 30 most recent customer reviews
Last updated 8/15/25
Customers say this electrical breaker meets their expectations in terms of functionality and performance. Many reviews mention quick delivery times and competitive pricing. While one user reports voltage detection issues, most find these units work effectively. Common feedback includes satisfaction with product condition upon arrival and straightforward installation. Reviews indicate availability of specialty models that are often hard to find through local suppliers.