ATTENTION: Atlantic Ultraviolet Corporation is deemed an essential NY business, supplying Germicidal Ultraviolet Equipment & Lamps to Medical and other essential services. Germicidal UV-C inactivates bacteria, virus, and other microorganisms. All employees deemed non-essential are working from home, and we are operating with minimal staff. During the Coronavirus Outbreak, we are experiencing higher than normal call volume and longer than usual shipment times. Please be patient with us as we work through this. We appreciate all the business and rest assured that we are doing our very best.

ALERT: OUR EMAIL ADDRESSES HAVE BEEN SPOOFED - A company selling UV cell phone cleaners has spoofed our email addresses. We did not send an email with the subject "Don't get sick from the bacteria on your phone." This is NOT our product - do not click any links in that email.

Ballast: 120v 50/60Hz 2-Prong Plug /258140B/Alarm/LED

Part Number:
Limited Supply - Call To Order Out of Stock
Call to order



Input Voltage: 120v AC
Frequency: 50/60 Hz.
Designed for: UltimateTM Water Purifiers Model U4, U7, U9 & U15
Certifications: CE / UL #E191525
Size: 4.92” x 2.4” x 1.38” (125 x 60 x 35 mm)
Weight: 10 oz. (0.3 kg.)
Mounting: Slotted Mounting Tabs
Special Features: Green & Red LED, Buzzer if lamp not working.

This ballast is a replacement ballast for the following 120v AC Atlantic Ultraviolet Corporation® Ultraviolet Products:

Ultimate U4, U7, U9, U15

This ballast is also an equivalent replacement ballast for the following 120v AC models:

Brand Model
Neptune 1010, 1020, 2020, 3020
Water Treatment & Accessories 1010, 1020, 2020, 3020

Disclaimer: This is an Atlantic Ultraviolet Corporation® Surelite® brand ballast. It can be used as an equivalent replacement ballast for other brands.

Shipping Info

    Items marked "Ready to Ship - In Stock" are ready to ship and will do so promptly. Items marked "Varied Ship Date - Contact Us" are in production, and the ship date varies. Please place order & contact us for ship date.


Part Category:
Accessories by Model:
Ultimate U4, Ultimate U7, Ultimate U9, Ultimate U15
Part Type Equipment Brand Model / Part #
Ballast Atlantic Ultraviolet Corporation U15
Ballast Atlantic Ultraviolet Corporation U4
Ballast Atlantic Ultraviolet Corporation U7
Ballast Atlantic Ultraviolet Corporation U9
Ballast Neptune 1010
Ballast Neptune 1020
Ballast Neptune 2020
Ballast Neptune 3020
Ballast Surelite 10-0505B
Ballast Ultimate U15
Ballast Ultimate U4
Ballast Ultimate U7
Ballast Ultimate U9
Ballast Water Treatment & Accessories 1010
Ballast Water Treatment & Accessories 1020
Ballast Water Treatment & Accessories 2020
Ballast Water Treatment & Accessories 3020