Toroidal transformers are becoming increasingly popular due to their improved magnetic properties. The advantage of the toroidal (donut) shape is that due to its symmetry the amount of magnetic flux that escapes outside the core (leakage flux) is minimised, therefore it radiates less electromagnetic interference (EMI) to nearby circuits or equipment. EMI is of increasing importance in modern low power, high frequency electronics.
Toroid transformers can be made to a lower profile than a standard solenoid core transformer, allowing for equipment of similar power to be of a lower profile.
Attention OEM customers: Please contact our parent company Altronic Distributors for extremely competitive wholesale pricing. Variations or custom toroidals available. Minimum order quantity applies.
Manufacturers please note, we recommend that a sample is obtained to confirm suitability.
Recommended External Primary Fuse: Slow blow Littelfuse 218 Series T3.15A L250VP
Included Mounting Hardware
1 x Metal Washer: Φ8.5 x 90 x 1.2mm
2 x Rubber Washer: Φ8.5 x 120 x 1.5mm
1 x M8 x 70 Screw
1 x M8 Hex Nut
1 x M8 Washer
1 x M8 Lock Washer
Wiring
Secondary (SEC) Current A
Current available where secondaries are connected in parallel.
Secondary (SEC) Current B
Current available where secondaries are connected in series.
Mounting
Safety Standard: AS/NZS 61558-2-6 Certified
Primary voltage: 240V AC 50Hz
Secondary voltage: 25V (parallel), 50V (series)
Secondary current: 20A (parallel), 10A (series)
Regulation: Better than 10%
Maximum temperature rise: 75°C
Maximum ambient Temperature: 25°C
Dielectric strength: 4000V for 1 Minute
Insulation class: Class B (130ºC)
Tolerance: ± 2%
Thermal Protector: Thermal cut-out 17AM033A5 130℃ 9A 250V
Winding Wire: Enamelled Copper
Pri. Winding: 574Ts￠0.96mm
Sec. Winding: 75Ts+75Ts￠1.8mm
Sec. Rating: 2 x 30VAC, 8.3A
Pri. Lead Wire: UL1672 AWG#18, 105°C, VW-1, 300V, double insulation
Sec. Lead Wire: UL3321 AWG#12 150 °C VW-1, 600V, Single insulation