What certifications do these power cords carry?

UL and cUL-listed cord sets across the catalog, with 30+ international approval marks (VDE, ENEC, PSE, SAA, CCC, KC and more) on country-specific cords. The approvals each part carries are listed on its product page; documentation is available from sales.

Do you require a minimum order quantity?

No. We sell from 1 cord to 100,000. Volume discounts apply automatically at quantity breaks — you'll see pricing tiers on every product page.

Can I get a custom length or color?

Yes. Custom lengths and non-standard colors are hand-terminated in our Connecticut shop — typically 3–4 business days from in-stock components. Call (860) 763-2100 or submit a quote request with your specs.

How fast does this ship?

In-stock orders placed by 2:30 PM ET ship the same day via FedEx or UPS. All standard configurations are stocked in East Windsor, CT.

IEC 60309 520P7W to 520C7W 12/5 SOOW Black Extension Cables

20 Amps480 volts 3-phaseIEC 60309 WC520P7WIEC 60309 WC520C7W

Reference guide:NEMA connector guide →

configurations

19 results

Not sure which cord you need?

Answer a few quick questions and we’ll narrow it down for you.

Match by picture

Part number	Plug	Connector	Length	Jacket	Colour	Stock	Price	Add to order
520P7W-520C7W-S4-120	520P7W	520C7W	10 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-180	520P7W	520C7W	15 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-240	520P7W	520C7W	20 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-300	520P7W	520C7W	25 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-360	520P7W	520C7W	30 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-420	520P7W	520C7W	35 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-480	520P7W	520C7W	40 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-540	520P7W	520C7W	45 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-600	520P7W	520C7W	50 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-660	520P7W	520C7W	55 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-720	520P7W	520C7W	60 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-780	520P7W	520C7W	65 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-840	520P7W	520C7W	70FT	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-900	520P7W	520C7W	75 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-960	520P7W	520C7W	80 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-1020	520P7W	520C7W	85 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-1080	520P7W	520C7W	90 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-1140	520P7W	520C7W	95 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote
520P7W-520C7W-S4-1200	520P7W	520C7W	100 Feet	12 AWG · SOOW	Black	Build to order	Quote	Quote

The plugs and connectors in this collection

What each end is, what it mates with, and where to find every cord built on it.

Plug
IEC 60309 WC520P7W
- 20 Amps
- 277/480V Y 3-phase
On 19 of the cords here
The IEC 60309 520P7W is a 5 wire plug body rated for 277/400-288/500VAC and 20 Amps. The connector body is black for easy identification and is a waterproof industrial power connector.
Mates with IEC 60309 WC520R7W
You are on the IEC 60309 WC520P7W family page.
Connector
IEC 60309 WC520C7W
- 20 Amps
- 277/480V Y 3-phase
On 19 of the cords here
The IEC 60309 520C7W is a 5 wire connector body rated for 277/400-288/500VAC and 20 Amps. The connector body is black for easy identification and is a waterproof industrial power connector.
Mates with IEC 60309 WC520B7W
You are on the IEC 60309 WC520C7W family page.

About IEC 60309 520P7W to 520C7W 12/5 SOOW Black Extension Cables

World Cord Sets supplies iec 60309 520p7w to 520c7w 12/5 soow black extension cables from our East Windsor, Connecticut headquarters, with manufacturing across US and overseas facilities. Cords are tested and certified to spec before shipment. We stock 19+ configurations and build custom cords to order — hand-terminated builds from in-stock components typically ship in 3–4 business days. In-stock orders placed by 2:30 PM ET ship the same day from our Connecticut warehouse.

Current rating

20 Amps

Voltage rating

480 volts 3-phase

Plug (male end)

IEC 60309 WC520P7W

Connector (female end)

IEC 60309 WC520C7W

Certifications & compliance

UL
cUL
RoHS
REACH

Every cord we build is hi-pot tested
Same-day shipping by 2:30 PM ET
NET 30/60/90 for approved accounts
In-house engineering and compliance support

Frequently asked questions

What certifications do these power cords carry?: UL and cUL-listed cord sets across the catalog, with 30+ international approval marks (VDE, ENEC, PSE, SAA, CCC, KC and more) on country-specific cords. The approvals each part carries are listed on its product page; documentation is available from sales.
Do you require a minimum order quantity?: No. We sell from 1 cord to 100,000. Volume discounts apply automatically at quantity breaks — you'll see pricing tiers on every product page.
Can I get a custom length or color?: Yes. Custom lengths and non-standard colors are hand-terminated in our Connecticut shop — typically 3–4 business days from in-stock components. Call (860) 763-2100 or submit a quote request with your specs.
How fast does this ship?: In-stock orders placed by 2:30 PM ET ship the same day via FedEx or UPS. All standard configurations are stocked in East Windsor, CT.