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The CS100J-A REX Control Transformer offers reliable performance with a voltage range of 600-120V and a power rating of 100VA. Ideal for various applications, this transformer ensures efficient operation and enhanced safety for your circuits. Perfect for commercial and residential use, it’s a dependable choice for all your control needs.
Yes — the CS100J-A is rated for a 600V primary, which aligns directly with the standard 600V distribution voltage used throughout Canadian commercial and industrial facilities. It steps that voltage down to a 120V secondary for safe control-circuit operation, making it well suited for Canadian code-compliant installations.
Add up the VA ratings of all devices powered by the transformer's secondary — including contactors, relays, solenoids, pilot lights, and any inrush loads. As a rule of thumb, account for the higher inrush (sealed vs. picked-up VA) of any coils on the circuit. If your total load approaches or exceeds 100 VA, you may need a larger unit such as a 150 VA or 250 VA model. Our team can help you size correctly — just share your load list.
In many cases, yes — control transformers of the same VA rating and voltage class (600V primary / 120V secondary) are often interchangeable provided the physical footprint and mounting pattern are compatible. Northern Breaker Group specializes in hard-to-find and obsolete electrical components; contact us with your existing transformer's part number and we can confirm whether the Rex CS100J-A is a suitable replacement or help source an equivalent.
