Robertshaw Class 2 Transformer: 75 VA Power Rating, 120V AC/208V AC/240V AC/480V AC
The ROBERTSHAW Class 2 Transformer (MPN 620-503) is an open Class 2 transformer with a 75 VA power rating. It features a plate mounting style, 120V AC input voltage, and 24V AC output voltage, with wire lead…
SKU 3G-OTH-49311
Also listed as: 620503 · 620 503
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
The ROBERTSHAW Class 2 Transformer (MPN 620-503) is an open Class 2 transformer with a 75 VA power rating. It features a plate mounting style, 120V AC input voltage, and 24V AC output voltage, with wire lead connections for both primary and secondary sides.
Frequently Asked Questions
What is a Robertshaw Class 2 transformer used for?
A Robertshaw Class 2 transformer steps down line voltage to 24V AC for powering low-voltage controls, relays, and thermostats in HVAC, burner management, and industrial automation systems. It supplies 75 VA to multiple loads safely.
What are the specifications of the Robertshaw 620-503 transformer?
The Robertshaw 620-503 is a 75 VA open Class 2 transformer with 120V AC input and 24V AC output. It has wire lead connections on both primary and secondary sides and a plate mounting style. It also accepts 208V, 240V, and 480V AC inputs.
Where to buy a Robertshaw 620-503 transformer worldwide?
3G Electric supplies the Robertshaw 620-503 Class 2 transformer to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this and other industrial control components.
How to install a Robertshaw Class 2 transformer?
Mount the transformer securely using the plate mounting holes. Connect primary wire leads to the correct input voltage (120V, 208V, 240V, or 480V AC) per local codes. Connect secondary leads to the 24V AC load. Ensure the total VA draw does not exceed 75 VA.
Used in
Common applications for RobertshawRobertshaw Products
3G Electric supplies Robertshaw open class 2 transformers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
