Best selling Transformers from Block
Here you’ll find the best Transformers from Block. The ranking is based on the best-selling products from this brand within the category. In addition to sales volume, factors such as availability, pricing, and overall customer relevance also influence the order. For each product, we include a short description and the most important highlights from customer reviews, giving you a quick overview of the most popular Block options. This page always stays fresh and updates automatically.
1. Block Transformer DIN-rail 25VA 24V
Primary nominal voltage: 230V AC
Secondary nominal voltage: 24V AC
Nominal power: 25VA
Number of outputs: 1
Length: 106mm
Width: 94mm
Depth: 63mm
Dimensions: 106 x 94 x 63mm
Operating frequency min.: 50Hz
Operating frequency max.: 60Hz
Maximum temperature: +40°C
Weight: 950g
Safety transformers of the ACT series. Short-circuit proof safety transformers, encapsulated in resin. Robust plastic housing. Integrated fuse and over-temperature protection as safeguards against overload and short circuit. Screw terminals for connecting wires to input and output. Complies with the requirements of IEC61558, EN61558, and VDE0570. Insulation class B. Design class 2. Insulation: 3750V (Primary to Secondary).
2. Block PCB mount transformer 1.5VA 1x24 o/p
Secondary rated voltage: 24V AC
Rated power: 1.5VA
Primary rated voltage: 230V AC
Number of outputs: 1
Length: 32.3mm
Width: 27.3mm
Depth: 23.8mm
Dimensions: 32.3 x 27.3 x 23.8mm
Weight: 80g
Mounting type: Through-hole mounting
Max temperature: +70°C
Min operating frequency: 50Hz
Max operating frequency: 60Hz
EN 61558, ENEC 10, UL-recognized component. Transformers for PCB mounting, short-circuit proof, Series VB and PT. 230V AC 50 to 60Hz primary. One or two secondary windings for series or parallel connection (for compliance reasons, transformers with 0.35 to 3.2 VA with 2 x 15 and 2 x 18 V outputs and all transformers with 2 x 24 V outputs should not have their secondary windings connected in series, as they would not meet VDE 0550 approval). Series VB (0.35–3.2 VA) is inherently short-circuit proof. Series PT (4.5–22 VA) is protected by an internal PTC unit. Compact design, vacuum epoxy resin encapsulation according to UL94-V0 class. Two-part coil made of glass-fiber reinforced polyamide. 100% electrical testing and dielectric testing. High efficiency and low heating. Low capacitance between windings. Low noise interference. Extra mounting points for secure PCB installation (models from 4.5 VA).
3. Block Isolation transformer 300VA 2x115V o/p
Primary rated voltage: 230V AC
Secondary rated voltage: 115V AC
Rated power: 300VA
Mounting type: Panel mount
Number of outputs: 2
Length: 223mm
Width: 117mm
Depth: 117mm
Dimensions: 223 x 117 x 117mm
Operating frequency min: 50Hz
Operating frequency max: 60Hz
Maximum temperature: +40°C
Weight: 4.9kg
The safety isolating transformers in this series from Block are short-circuit proof and have thermal overload protection. The single-phase transformers include mounting holes for easy installation and have two independent secondary windings that can be connected in series or parallel. These very efficient safety isolating transformers feature protection by integrated primary fuse. Block safety isolating transformers benefit from the following features: encapsulated in plastic housing up to 300 VA, metal housing from 500 VA upwards, screw terminals on input and output, strain relief for connection cable, dual output for series or parallel connection, high efficiency (typical 88%), 100% electrical test and 5 kV breakdown test, maximum ambient temperature: +40°C, insulation class: Class B (typical), construction: Class 2, protection class: IP20.
4. Block Toroidal Transformer 2x24V 400VA
Nominal voltage primary: 115V AC, 230V AC
Nominal voltage secondary: 2 x 24V AC
Nominal power: 400VA
Number of outputs: 2
Weight: 4.1 kg
Diameter: 128 mm
Operating frequency min: 50 Hz
Operating frequency max: 60 Hz
Connection type: Cable
Maximum temperature: +40 °C
Mounting kit included. RKD toroidal transformers feature a dual 115 VAC input. These high-quality open toroidal transformers have dual 115 VAC, 50/60 Hz primary and secondary windings that can be connected individually, in series, or in parallel as needed. They are compact and lightweight compared to traditional laminated stack designs, with very low magnetic radiation, very low induced noise (hum), and very low iron losses. Supplied with a mounting kit and insulation class B.
5. Block Isolation transformer,63VA 2x0-12V o/p
Secondary rated voltage: 12V AC
Rated power: 63VA
Mounting type: DIN rail, panel
Number of outputs: 2
Length: 78mm
Width: 85mm
Depth: 88mm
Dimensions: 78 x 85 x 88mm
Operating frequency min.: 50Hz
Operating frequency max.: 60Hz
Temperature max.: +40°C
Weight: 1.3kg
EN61558, VDE05700950. UL recognized component for Canada and USA. Control, safety, and isolation transformer. Suitable as safety and control isolation transformers. Double secondary winding for series or parallel connection. Transformers with 63, 100, 160, and 250 VA can also be mounted on 35 mm standard DIN rails. All transformers have 4 mounting holes for panel mounting. Easy installation with 4 mm² cage terminals. Insulation class B. Main connections: 0 V, -15 V, +15 V, 230 V, 400 V. Due to the +15 and -15 V, the primary voltage can be counterbalanced with 15 V. Small inrush current. High efficiency, low regulation.
6. Block Toroidal transformer Toroidal safety/isolating transformer
High performance with low volume. Optimum efficiency. Dual output voltage for series or parallel connection. Reinforced insulation between primary and secondary. Very low stray magnetic field.
7. Block PCB mount transformer 50VA 1x24 o/p
Secondary nominal voltage: 24V AC
Nominal power: 50VA
Primary nominal voltage: 230V AC
Number of outputs: 1
Length: 94mm
Width: 61mm
Depth: 58.5mm
Dimensions: 94 x 61 x 58.5mm
Weight: 990g
Mounting type: Through-hole mounting
Maximum temperature: +40°C
Minimum operating frequency: 50Hz
Maximum operating frequency: 60Hz
This product complies with the standards EN 61 558, IEC 61558, ENEC, and UL approvals. To meet the requirements of VDE 0550 and UL506, the secondary windings of all transformers with two 24V outputs should not be connected in series. It is designed for PCB mounting with a 230V AC primary connection, belongs to the VC/VCM series, and features one or two secondary windings for series or parallel connection. The product is vacuum encapsulated with resin according to UL94-V0, has low capacitance between the windings, operates quietly, and has undergone 100% electrical and dielectric testing. It also includes additional mounting points for secure PCB mounting (25VA and 36VA).
8. Block Transformer PCB 1.5VA 2x18V
Nominal secondary voltage: 18V AC
Nominal power: 1.5VA
Nominal primary voltage: 230V AC
Number of outputs: 2
Length: 32.3mm
Width: 23.8mm
Depth: 27.3mm
Dimensions: 32.3 x 23.8 x 27.3mm
Weight: 84g
Mounting type: Through-hole mounting
Maximum temperature: +70°C
EN 61558 ENEC 10; UL-approved component. Transformers for PCB mounting, short-circuit proof, series VB and PT. 230V AC 50 to 60 Hz primary. One or two secondary windings for series or parallel connection. For compliance reasons, secondary windings of transformers rated from 0.35 to 3.2 VA with 2 x 15 and 2 x 18 V outputs, as well as all transformers with 2 x 24 V outputs, should not be connected in series, as they will not comply with VDE 0550 approval. Series VB (0.35-3.2 VA) is inherently short-circuit proof. Series PT (4th generation) is short-circuit proof. Compact design with vacuum-encapsulated epoxy resin part according to UL94-V0 class. Two-part coil made of glass-fiber reinforced polyamide. 100% electrical testing and breakdown testing. High efficiency and low heating. Low capacitance between windings. Low noise level. Additional mounting points for secure PCB mounting (models from 4.5 VA).
9. Block PCB mount transformer 5.0VA 1x24 o/p
Secondary rated voltage: 24V AC
Rated power: 5VA
Primary rated voltage: 230V AC
Number of outputs: 1
Length: 44mm
Width: 37mm
Depth: 33mm
Dimensions: 44 x 37 x 33mm
Weight: 190g
Mounting type: Through-hole mounting
Maximum temperature: +50°C
Minimum operating frequency: 50Hz
Maximum operating frequency: 60Hz
Complies with EN 61 558, IEC 61558, ENEC, and UL approval. To meet the requirements of VDE 0550 and UL506, all transformers with two 24V outputs should not have the secondary windings connected in series. PCB-mounted, 230VAC primary, VC/VCM series. One and two secondary windings for series or parallel connection. Encapsulated under vacuum with resin according to UL94-V0. Low capacitance between windings. Low noise level. 100% electrical and dielectric testing. Additional mounting points for secure PCB mounting (25VA and 36VA).
10. Block PCB mount transformer 5.0VA 1x12 o/p
Secondary rated voltage: 12V AC
Nominal power: 5VA
Primary rated voltage: 230V AC
Number of outputs: 1
Length: 44mm
Width: 37mm
Depth: 33mm
Dimensions: 44 x 37 x 33mm
Weight: 190g
Mounting type: Through hole mounting
Maximum temperature: +50°C
Minimum operating frequency: 50Hz
Maximum operating frequency: 60Hz
Complies with EN 61558, ENEC, and UL approval. For transformers with two 24V outputs, the secondary windings should not be connected in series. PCB mounted, 230V AC primary, VC/VCM series. One and two secondary windings for series or parallel connection. Molded with resin under vacuum to UL94-V0. Low capacitance between turns. Low noise. 100% electrical and breakdown testing. Extra mounting points for secure PCB mounting (25VA and 36VA).
Product order
See all products