Product Name：JBK3-100VA Control Transformer 380V/220V to 24V
Core Features
1. Advantage：
The JBK3-100VA is a dry-type control transformer designed to step down main power to a safe control voltage for HVAC and industrial equipment control circuits. The multi-tap primary winding accepts 380V, 220V or 231V input, while the secondary provides 24V AC for contactors, relays, timers and control panels. The compact iron-core construction and IP00 open design allow flexible mounting in control cabinets, and the screw terminals make wiring quick and tool-secure.
2.Supply & Packaging:
Model: JBK3-100VA
Capacity: 100VA
Frequency: 50/60Hz
Input: 20-21: 380V / 20-22: 220V / 20-23: 231V
Output: 30-31: 24V, 35: PE
Protection: IP00
Certification: CE / EMC / GB
Date Code: 2026.05
Net Weight: ~2.05 kg
Packing: Carton box
3.Our Advantage
Control transformers are critical to keeping a control panel alive-a burnt transformer takes down the whole unit until it is replaced. We supply this model as a direct replacement for control transformers commonly used in HVAC and refrigeration equipment, and we can verify your required input/output voltages before shipping. For bulk needs, we can quote consistent pricing across multiple units.
Transportation Methods
UPS, DHL,FeDex, Sea and air freight, etc
Package
Wooden cases and cartons and so on
FAQ
Q: How can we contact you?
A:1. WhatsApp / Wechat: +86 15893891309 Violet Yan
Q: 2.What voltage does this transformer output?
A：The secondary provides 24V AC on terminals 30-31, which is the standard control voltage for most HVAC control circuits. The primary accepts 380V (20-21), 220V (20-22) or 231V (20-23) depending on your tap connection.
Q: 3.Can I use this to replace a burnt transformer on my unit?
A:If your control circuit requires 24V output and the capacity matches your load, yes. Check the VA rating on your old transformer-if your load is near or above 100VA, you may need a larger capacity model. Send us your old unit's label and we will confirm.
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