The correct transformer depends on three factors: the operating voltage of your switchable glass system (48VAC or 65VAC), the total connected load, and the number of panels. PriWatt offers 100W and 300W models to accommodate a wide range of residential and commercial applications. If you're unsure which model is right for your project, our technical team can assist with sizing and selection.
PriWattâ„¢ Isolation Transformers
Stable AC power engineered specifically for PriWatt switchable glass systems.
Made In Germany
Product Selection
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100W
110–120VAC → 48VAC
110–120VAC → 48VAC
Model: PRI 120 VAC / SEC 65 VAC
- PRI: 110V / 50-60Hz
- SEC: 48V / 2.08 A
- Potted in a black plastic housing
- 4 mounting straps at the housing
- Pri-connection: SVT 2x AWG18, black, ca. 0,3 m long
- Sec-connection: SVT 2x AWG18, black, ca. 0,3 m long
- Automatically resetting temperature switch (110° C)
- Glass tube micro fuse (D 2,0 A)
- Maximum ambient temperature 40° C
- Isolation class B
- IP 56
- Dimensions (L x W x H): ca. 120/89 x 75 x 77 mm3 (sens cords)
- Weight: ca. 2,2 kg (4.85 lbs)
- UL certificates: E125651, E466710
- According to EN 61558
- Made in Germany
Model: PRI 110 VAC / SEC 48 VAC
- PRI: 110V / 50-60Hz
- SEC: 48V / 6.25 A
- Potted in a black plastic housing
- 4 mounting straps at the housing
- Pri-connection: SVT 2x AWG18, black, ca. 0,3 m long
- Sec-connection: SVT 2x AWG18, black, ca. 0,3 m long
- Automatically resetting temperature switch (110° C)
- Glass tube micro fuse (D 4,0 A)
- Maximum ambient temperature 40° C
- Isolation class B
- IP 56
- Dimensions (L x W x H): ca. 134/101x91x100mm3(sens cords)
- Weight: ca. 3,4 kg (7.5 lbs)
- UL certificates: E125651, E466710
- According to EN 61558
- Made in Germany
300W
110–120VAC → 48VAC
110–120VAC → 48VAC
PriWattâ„¢ 100 VA Isolating Transformer
110–120VAC → 65VAC
110–120VAC → 65VAC
Model: PRI 120 VAC / SEC 65 VAC
- PRI: 120V / 50-60Hz
- SEC: 65V / 1.54 A
- Black potted plastic housing
- 4 integrated mounting straps
- Pri-connection: SVT 2 × AWG18, black, approx. 16 in (400 mm)
- Sec-connection: SVT 2 × AWG18, black, approx. 8 in (200 mm)
- Automatic reset thermal switch (110 °C)
- Glass tube micro fuse (D 2,0 A)
- Maximum ambient temperature 40° C
- Isolation class B
- IP 56
- Dimensions (L x W x H): 120/189 × 75 × 77 mm (excluding cables)
- Weight: ca. 2,2 kg
- UL certificates: E125651, E466710
- According to EN 61558
- Made in Germany
Model: PRI 120 VAC / SEC 65 VAC
- PRI: 120V / 50-60Hz
- SEC: 65V / 4.61 A
- Potted in a black plastic housing
- 4 mounting straps at the housing
- Pri-connection: SVT 2 × AWG18, black, approx. 16 in (400 mm)
- Sec-connection: SVT 2 × AWG18, black, approx. 8 in (200 mm)
- Automatically resetting temperature switch (110° C)
- Glass tube micro fuse (D 4,0 A)
- Maximum ambient temperature 40° C
- Isolation class B
- IP 56
- Dimensions (L x W x H): 134 × 101 × 91–100 mm
- Weight: ca. 3,4 kg (7.5 lbs)
- UL certificates: E125651, E466710
- According to EN 61558
- Made in Germany
PriWattâ„¢ 300 VA Isolating Transformer
110–120VAC → 65VAC
110–120VAC → 65VAC
Features
Isolation Transformer
Stable AC Output
Thermal Protection
Short Circuit Protection
Commercial Grade
Low Noise
Wall Mount
Smart Glass Optimized
Frequently Asked Questions
The coverage depends on the operating voltage, glass technology (PDLC, PNLC, or DLC), panel dimensions, and total power consumption. Rather than estimating by square footage alone, PriWatt recommends sizing transformers based on the total electrical load of the connected panels. Contact us with your project details for a recommendation.
The only difference is the output voltage. Each transformer is designed for switchable glass systems engineered to operate at either 48VAC or 65VAC. Always use the transformer specified for your PriWatt glass system, as using the incorrect output voltage may affect performance or damage the product.
Yes. Multiple panels can be powered by a single transformer provided that the combined electrical load does not exceed the transformer's rated capacity. Proper wiring practices and load calculations should always be followed.
Yes. All PriWatt transformers incorporate thermal protection to help safeguard the transformer during abnormal operating conditions. If an overload or excessive temperature occurs, the protection system helps prevent damage to the transformer.
Yes. PriWatt transformers are compatible with PriWatt controllers and can be integrated with popular automation systems such as Lutron, Crestron, Control4, KNX, dry-contact controls, wall switches, and other compatible control interfaces. The transformer supplies power, while the controller manages the switching function.
Yes. PriWatt isolation transformers are designed for continuous operation when installed and operated within their specified electrical ratings. For PDLC switchable glass, PriWatt recommends allowing the glass to remain in its OFF state for at least 4 hours within every 48-hour period to help maximize long-term performance and service life. This recommendation applies to the switchable glass itself, not to the transformer. The transformer may remain energized continuously.