The S 4455 is a DIN rail mountable relay box with 2 sets of voltage free changeover contacts. Each set of contact terminals have a N/O (normally open), N/C (normally closed) and a common connection. The N/O and common terminals become a closed connection when the relay is activated. When the relay is not active the N/C and common terminals are a closed connection. The relay contacts are rated at 10 amps.
The DC input voltage can be either 12V, 24V or 48V DC selectable via a three way jumper on board. A led illuminates when the relay is activated.

Below is a typical example of how to use the relay box. The Altronics A 1707A timer is used to trigger a 24VDC school bell, which requires more current than the output of the timer can provide. The 24V switched output out of the timer is used to power the relay box, which in turn connects the +24V of the external 24V DC supply, to activate the school bell. Note: The jumper on the relay box is in the 24V position.

100% developed, designed & assembled in Australia.
Since 1976 Redback PA products have been manufactured in Perth, Western Australia by Altronics. With over 40 years experience in the commercial audio industry, we offer consultants, installers and end users reliable products of high build quality with local product support. Read more about our Australian Made products

Backed by an industry leading 10 Year Manufacturer Warranty.
Our Redback products have a long tried and tested history of bulletproof reliability. Altronics offers a 10 Year Warranty on all Australian Made Redback products. Our local in-house service department has all the know how to answer technical queries and provide timely service. Read more about our industry leading warranty.

• Altronics Code: S4455
• I/N: 13074
• Barcode: 9321758177921
• Shipping Weight: 0.14000Kg
• Packaging Sizes
• EACH: 1
• CARTON: 50
• Printed Catalogue Page 358
• Large Image 1
• Large Image 2
• Instructions