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Featured Products

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RD 100/0,8, Block

Block Resistance Wire Block resistance wire is made from a high quality Constantan alloy which ensures that...

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PT 13/2/9, Block

Transformers PCB Mount, Short Circuit Proof, VB & PT Series 230Va.c. 50 to 60Hz primary Single or twin secondary windings for series or parallel...

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FS-1EFD-2509-00, Block

Block FS-1EFD Series Size 25/13/9 Ferrite Transformer Cores FS-1EFD series size 25/13/9 ferrite transformer...

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FS-1RIN-131-00, Block

Block FS-1RN Series Iron Powder Toroidal Cores FS-1RN series toroidal cores made from iron powder (26) for...

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TT3 12,5-4-4, Block

TT3 Series Transformers Brought to you by Block, the TT3 series of 3 phase transformers are highly efficien...

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VB 1.5/2/18, Block

Transformers PCB Mount, Short Circuit Proof, VB & PT Series 230Va.c. 50 to 60Hz primary Single or twin seco...

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BRS 2200, Block

Block BRS series Laboratory AC power supply The BRS series AC current supply from Block enables graphical visualisa...

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FS-1ETD-3411-02, Block

Block FS-1ETD Series Size 34/17/11 Ferrite Transformer Cores FS-1ETD series size 34/17/11 ferrite transform...

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FS-1E-3209-01, Block

Block FS-1E Series Size 32/16/11 Ferrite Transformer Cores FS-1E series size 32/16/11 ferrite transformer c...

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FS-1EFD-2509-02, Block

Block FS-1EFD Series Size 25/13/9 Ferrite Transformer Cores FS-1EFD series size 25/13/9 ferrite transformer...

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FL 10/14014/9, Block

PCB Mount Transformer, Triple Output, 115/230Vac High quality, low profile, triple output encapsulated safe...

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TTMS 5000/230, Block

TTMS Series Medical Transformers The TTMS series of isolation transformers have a rated input of 230 V ac a...

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Popular Categories For Block

Transformer Cores (19)

Copper Wire (24)

DIN Rail Transformers (27)

Power Line Filters (15)

DIN Rail Power Supplies (39)

Transformer Accessories (12)

Autotransformers (43)

Hook Up Wire (12)

Chassis Mounting Transformers (72)

Sine Wave Filters (34)

PCB Transformers (248)

Toroidal Transformers (82)

Categories For Block

Transformers (531)

Power Supplies & Transformers (6)

Power Conditioners (6)

Popular Items

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RD 100/0,8, Block

Block Resistance Wire Block resistance wire is made from a high quality Constantan alloy which ensures that resistance levels remain practically unchanged regardless of temperature. Block resistance wire also features a firmly adhering surface oxide coating that withstands any temperature change and protects against further oxidation under continuous load, whilst maintaining malleability for easy machining. Block resistance wire can be used for soft soldering, hard soldering or welding and applications include the production of technical resistances, shunts and other general laboratory needs. Resistor allow as specified in DIN 46 461 (CuNi44) Specific electrical resistance 0.49 ((Ω x mm)/m) Average temperature constant of the electrical resistor at 20°C = 0.00004 - 0.00008 Average linear thermal expansion coefficient between 20°C - 100°C = 13.5 x 10 - 6 Melting temperature 1220°C - 1270°C Maximum permissible wire temperature up to 600°C Constantan Alloy Resistance Wire

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PT 13/2/9, Block

Transformers PCB Mount, Short Circuit Proof, VB & PT Series 230Va.c. 50 to 60Hz primary Single or twin secondary windings for series or parallel connection (For conformance reasons,0.35 to 3.2VA transformers with 2 x 15 and 2 x 18V outputs and all transformers with 2x 24V outputs should not have their secondaries connected in series as this means they will not meet the VDE 0550 approval) VB series (0.35 - 3.2VA) are inherently short circuit proof PT series (4.5 - 22VA) are protected by internal PTC device Compact design Vacuum epoxy resin moulded to UL94-V0 rating Double section glass fibre reinforced polyamide bobbins 100% electrical and flash tested High efficiency and low temperature rise Low inter-winding capacitance Low radiated noise Extra fixing holes for secure boarding mounting on 4.5VA and above Selection Guide (Dual secondary) VA Rating Fixing centres (mm) Pin configuration (mm) C1 C2 P1 S1 S2 A Pin Size 0.35 - - 15 5 5 15 0.6 Ø 0.5 - - 15 5 5 15 0.6 Ø 1.0 - - 20 10 5 20 0.8 Ø 1.5 - - 20 10 5 20 0.8 Ø 2.3 - - 20 10 5 20 0.8 Ø 3.2 - - 20 10 5 25 0.8 Ø 4.5 35 28 25 15 5 25 0.8 Ø 7.5 40 32 25 15 5 27.5 0.8 Ø 13 47.5 37.5 30 20 5 30 0.8 Ø 22 52.5 40 30 10 10 32.5 0.8 Ø Isolation Primary to Secondary 5kV Secondary to Secondary 250V Protection Class 2 Insulation: VB Series PT Series Class B (130°C) Class A (105°C) Class E (120°C) Class A (105°C) Fixing: mechanical fixings can be supplemented on the 4.5 to 22VA transformers by 4 self tapping crews (No-4 x 9.5mm max) using holes mounted in the corners of the case. Max Ambient Temperature 0.35 to 2.3VA +70°C, 3.2VA +50°C, 4.5 to 22VA +40°C Selection Guide (Single secondary) VA Rating Pin configuration (mm) P1 S1 A Pin Size 0.35 15 5 15 0.6 Ø 0.5 15 5 15 0.6 Ø 1.0 20 10 20 0.6 Ø 1.2 20 10 20 0.8 Ø 1.5 20 10 20 0.8 Ø 2.0 20 10 ...

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FS-1EFD-2509-00, Block

Block FS-1EFD Series Size 25/13/9 Ferrite Transformer Cores FS-1EFD series size 25/13/9 ferrite transformer cores made from N87. These EFD low profile type ferrite transformer cores are available with air gaps inserted: Stock number 840-7484 has a 0.1mm gap Stock number 840-7572 has a 0.2mm gap Stock number 840-7654 has a 0.5mm gap Stock number 840-7737 has a 1.0mm gap Typical applications for these ferrite cores include transformers and inductors in switch mode power supplies For bobbins see stock numbers 840-7320 and 840-7323 Transformer Ferrite Kits - Cores The A L value in the table applies to a core set consisting of two cores without air gap Cores ETD conform to IEC 51(CO)276

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FS-1RIN-131-00, Block

Block FS-1RN Series Iron Powder Toroidal Cores FS-1RN series toroidal cores made from iron powder (26) for creating inductors. These FS-1RN toroidal cores are available in a range of sizes, please refer to datasheet for details. Transformer Ferrite Kits - Cores The A L value in the table applies to a core set consisting of two cores without air gap Cores ETD conform to IEC 51(CO)276

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TT3 12,5-4-4, Block

TT3 Series Transformers Brought to you by Block, the TT3 series of 3 phase transformers are highly efficient and feature low heat loss. Fitted with easy-to-install mounting holes, the TT3 series transformers also feature screw terminal connections and integrated lifting eyes. Features and Benefits: Safe electrical isolation 400V 3 phase input + and - 5% tappings on the secondary windings BLOCKIMPEX vacuum impregnation Standards IEC 61558-2-4 DIN EN 61558-2-4 VDE 0570 part 2-4 Approvals UL 1561; CSA 22.2 Laminated

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VB 1.5/2/18, Block

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BRS 2200, Block

Block BRS series Laboratory AC power supply The BRS series AC current supply from Block enables graphical visualisation of current and voltage curves. Features & Benefits Rated input voltage 230 V ac Rated output voltage 0 V ac to 250 V ac Rated frequency 50 Hz Self-cooling Insulation class B Maximum ambient temperature 104°F/40°C IP20 Mains connection lead with safety plug, safety socket Product Application Information This isolating transformer can be used in laboratories due to its controllable output voltage. Standards VDE 0570 Teil 2-4, VDE 0411 Teil 1, DIN EN 61558-2-4, EN 61558-2-4, EN 61010-1, IEC 61558-2-4, IEC 61010-1 2200 VA power 1.8 internal impedence 89% efficiency Standards VDE 0570 Teil 2-4, VDE 0411 Teil 1, DIN EN 61558-2-4, EN 61558-2-4, EN 61010-1, IEC 61558-2-4, IEC 61010-1 Rack Mount AC Power Supplies

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FS-1ETD-3411-02, Block

Block FS-1ETD Series Size 34/17/11 Ferrite Transformer Cores FS-1ETD series size 34/17/11 ferrite transformer cores made from N87 with a cylindrical centre leg. These ETD ferrite cores are available with air gaps inserted: Stock number 840-7418 has a 0.1mm gap Stock number 840-7490 has a 0.2mm gap Stock number 840-7588 has a 0.5mm gap Stock number 840-7660 has a 1.0mm gap Typical applications for these ferrite cores include transformers and inductors in switch mode power supplies For bobbins see stock numbers 840-7342 and 840-7345 Transformer Ferrite Kits - Cores The A L value in the table applies to a core set consisting of two cores without air gap Cores ETD conform to IEC 51(CO)276

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FS-1E-3209-01, Block

Block FS-1E Series Size 32/16/11 Ferrite Transformer Cores FS-1E series size 32/16/11 ferrite transformer cores made from N87. These standard 'E' type ferrite transformer cores are available with air gaps inserted: Stock number 840-7459 has a 0.1mm gap Stock number 840-7531 has a 0.2mm gap Stock number 840-7614 has a 0.5mm gap Stock number 840-7702 has a 1.0mm gap Typical applications for these ferrite cores include transformers and inductors in switch mode power supplies For bobbin see stock number 840-7279 Transformer Ferrite Kits - Cores The A L value in the table applies to a core set consisting of two cores without air gap Cores ETD conform to IEC 51(CO)276

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FS-1EFD-2509-02, Block

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FL 10/14014/9, Block

PCB Mount Transformer, Triple Output, 115/230Vac High quality, low profile, triple output encapsulated safety isolating transformers with twin 115Va.c. 50/60Hz primary windings which may be connected in series for 230Va.c. or parallel for 115Va.c. operation. These transformers are designed for use in 5V and ±12Vd.c. power supplies when used in conjunction with readily available bridge rectifiers and regulators. Designed for through hole soldering direct to PCB's; mechanical fixing can be supplemented by 4 self-tapping screws (No.4 x 9.5 mm max. on the 6VA to 30VA transformers and M3 on the 45VA transformers) using holes moulded into the corners of the case. Low profile compact design Double section glass fibre reinforced polyamide bobbins 5kV primary/secondary isolation 100% electrical and flash tested High efficiency and low temperature rise Low inter-winding capacitance Low radiated noise Extra fixing holes for secure board mounting High quality manufacture and testing in accordance to VDE 0570, EN 61558 Selection Guide VA Rating Fixing centres (mm) Pin configuration (mm) C1 C2 P1 P2 S1 S2 A 6 37.5 47.5 15 10 20 5 35 10 50 62.5 15 15 30 5 45 14 50 62.5 15 15 30 5 45 18 50 62.5 15 15 30 5 45 30 50 62.5 15 15 30 5 45 45 60 75 27 15 32 10 53.5 Full load output voltage Secondary 1: 9Vac Secondary 2: 14.5-0-14.5Vac Typical regulator types Secondary 1: 7805 Secondary 2: 317L 337LZ Isolation Primary to Secondary 5kV Primary to Primary 1kV Secondary to Secondary 250V Protection Class 2 Insulation Class E (120°C) Operating temperature +40°C ambient max. Pin diameter (mm) 0.8 mm Design notes VA Rating (VA) Smothing Capacitor (C) Secondary Voltage off load (V) Secondary 1 (uF) Secondary 2 (uF) 6 470 2 x 220 On load V x 1.33 10 1000 2 x 220 On load V x 1.32 14 1000 2 x 220 ...

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TTMS 5000/230, Block

TTMS Series Medical Transformers The TTMS series of isolation transformers have a rated input of 230 V ac and a rated output voltage of 115 V ac and 230 V ac. These isolation transformers are protected from overload by a PTC resistor that is integrated in every coil to set up an external monitoring unit. Reduced starting currents enable excellent switch-on behaviour and these isolation transformers feature low short circuit voltage and very low idle current. BLOCKIMPEX vacuum impregnation allows for low noise and excellent corrosion protection. With a robust metal fixing rail featuring 8 oval slots, these isolation transformers are easy to mount. Features & Benefits Safe galvanic isolation IP00 protection 97% efficient Insulation class B UVV BGV A3 compliant contact protected screw terminals +40°C maximum ambient temperature Product Application Information These isolation transformers have been designed for supplying user group 2 medical rooms. Brand Information BLOCK is a global leader in power supply interface. Developing and producing switched mode power supplies through to coiled goods, BLOCK also offer cast resin optimisation and software development. Laminated

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