Block RKD/RTE Toroidal Isolation Transformers 120VA

Block Brand: Block

The Block RKD/RTE Toroidal Isolation Transformers 120VA act as a mains transformer for adjustment of the voltage and simple electrical isolation, while also acting as a safety isolating transformer for the safe electrical isolation of the input and output sides. These transformers may be used to set up protective separation as a protective measure in accordance with VDE 0100, and are also suitable for creating SELV and PELV circuits because of the limit on the output voltage. Additionally equipped with double voltage for series or parallel connection, along with reinforced insulation between PRI and SEC.

  • Low weight
  • Optimum Efficiency
  • Minimal no-load losses
  • Minimum size at high output
  • Very low magnetic and noise field
  • Outstanding temperature behaviour thanks to low magnetic leakage field
Description Image Product Buy Pricing (Ex VAT) Power Rating Weight Type Primary Voltage Secondary Voltage Number of Outputs Encapsulated Mounting Type
Block RTE 30/2x12 30 VA toroidal isolation transformer 230 V to 2 x 12 V
Block RTE 30/2x12 30 VA toroidal isolation transformer 230 V to 2 x 12 V
Extended range
Order code: 51-5825
MPN: RTE 30/2x12

Available to back orderBack order, lead time 3 weeks
1+ £39.44
Price per unit Ex VAT 		30VA 0.46kg Toroidal transformer 230V 2 x 12V 2 No Toroidal
Block RTE 40/2x12 40 VA toroidal isolation transformer 230 V to 2 x 12 V
Block RTE 40/2x12 40 VA toroidal isolation transformer 230 V to 2 x 12 V
Extended range
Order code: 51-5780
MPN: RTE 40/2x12

Back order - 2 availableBack-order availability date - 21/06/2026
1+ £43.09
Price per unit Ex VAT 		40VA 0.56kg Toroidal transformer 230V 2 x 12V 2 No Toroidal
Block RTE 50/2x12 50 VA toroidal isolation transformer 230 V to 2 x 12 V
Block RTE 50/2x12 50 VA toroidal isolation transformer 230 V to 2 x 12 V
Extended range
Order code: 51-5794
MPN: RTE 50/2x12

Back order - 3 availableBack-order availability date - 21/06/2026
1+ £46.47
Price per unit Ex VAT 		50VA 0.7kg Toroidal transformer 230V 2 x 12V 2 No Toroidal
Block RTE 60/2x12 60 VA toroidal isolation transformer 230 V to 2 x 12 V
Block RTE 60/2x12 60 VA toroidal isolation transformer 230 V to 2 x 12 V
Extended range
Order code: 51-5807
MPN: RTE 60/2x12

Available to back orderBack order, lead time 8 weeks
1+ £44.25
Price per unit Ex VAT 		60VA 0.75kg Toroidal transformer 230V 2 x 12V 2 No Toroidal
Block RTE 100/2x12 100 VA toroidal isolation transformer 230 V to 2 x 12 V
Block RTE 100/2x12 100 VA toroidal isolation transformer 230 V to 2 x 12 V
Extended range
Order code: 51-5826
MPN: RTE 100/2x12

Back order - 4 availableBack-order availability date - 21/06/2026
1+ £50.12
Price per unit Ex VAT 		100VA 1.2kg Toroidal transformer 230V 2 x 12V 2 No Toroidal
Block RTE 120/2x12 120 VA toroidal isolation transformer 230 V to 2 x 12 V
Block RTE 120/2x12 120 VA toroidal isolation transformer 230 V to 2 x 12 V
Extended range
Order code: 51-5777
MPN: RTE 120/2x12

Back order - 4 availableBack-order availability date - 21/06/2026
1+ £57.05
Price per unit Ex VAT 		120VA 1.41kg Toroidal transformer 230V 2 x 12V 2 No Toroidal
Block RTE 160/2x12 160 VA toroidal isolation transformer 230 V to 2 x 12 V
Block RTE 160/2x12 160 VA toroidal isolation transformer 230 V to 2 x 12 V
Extended range
Order code: 51-5791
MPN: RTE 160/2x12

Back order - 2 availableBack-order availability date - 21/06/2026
1+ £68.10
Price per unit Ex VAT 		160VA 1.73kg Toroidal transformer 230V 2 x 12V 2 No Toroidal
Block RTE 200/2x12 200 VA toroidal isolation transformer 230 V to 2 x 12 V
Block RTE 200/2x12 200 VA toroidal isolation transformer 230 V to 2 x 12 V
Extended range
Order code: 51-5806
MPN: RTE 200/2x12

Back order - 3 availableBack-order availability date - 21/06/2026
1+ £72.67
Price per unit Ex VAT 		200VA 2.16kg Toroidal transformer 230V 2 x 12V 2 No Toroidal
Block RTE 250/2x12 250 VA toroidal isolation transformer 230 V to 2 x 12 V
Block RTE 250/2x12 250 VA toroidal isolation transformer 230 V to 2 x 12 V
Extended range
Order code: 51-5820
MPN: RTE 250/2x12

Back order - 4 availableBack-order availability date - 21/06/2026
1+ £81.24
Price per unit Ex VAT 		250VA 2.52kg Toroidal transformer 230V 2 x 12V 2 No Toroidal
Order code51-578551-579851-582551-578051-5794
ConnectionConnecting wiresConnecting wiresConnecting wiresConnecting wiresConnecting wires
Dimensions (mm)62 x 3063 x 3270 x 3177 x 3479 x 39
MountingToroidalToroidalToroidalToroidalToroidal
Frequency50-60Hz50-60Hz50-60Hz50-60Hz50-60Hz
Power15VA20VA30VA40VA50VA
Primary voltage230V230V230V230V230V
Secondary current2 x 625mA2 x 833mA2 x 1.25A2 x 1.67A2 x 2.08A
Secondary voltage2 x 12V2 x 12V2 x 12V2 x 12V2 x 12V
Test voltage4000V4000V4000V4000V4000V
TypeRTE 15/2 x 12RTE 20/2 x 12RTE 30/2 x 12RTE 40/2 x 12RTE 50/2 x 12
Order code51-580751-581551-582651-577751-5791
ConnectionConnecting wiresConnecting wiresConnecting wiresConnecting wiresConnecting wires
Dimensions (mm)83 x 3891 x 4394 x 4596 x 45107 x 50
MountingToroidalToroidalToroidalToroidalToroidal
Frequency50-60Hz50-60Hz50-60Hz50-60Hz50-60Hz
Power60VA80VA100VA120VA160VA
Primary voltage230V230V230V230V230V
Secondary current2 x 2.50A2 x 3.33A2 x 4.17A2 x 5A2 x 6.67A
Secondary voltage2 x 12V2 x 12V2 x 12V2 x 12V2 x 12V
Test voltage4000V4000V4000V4000V4000V
TypeRTE 60/2 x 12RTE 80/2 x 12RTE 100/2 x 12RTE 120/2 x 12RTE 160/2 x 12
Order code51-580651-581451-5820
ConnectionConnecting wiresConnecting wiresConnecting wires
Dimensions (mm)116 x 53117 x 117117 x 54
MountingToroidalToroidalToroidal
Frequency50-60Hz50-60Hz50-60Hz
Power200VA225VA250VA
Primary voltage230V230V230V
Secondary current2 x 8.33A2 x 9.38A2 x 10.4A
Secondary voltage2 x 12V2 x 12V2 x 12V
Test voltage4000V4000V4000V
TypeRTE 200/2 x 12RTE 225/2 x 12RTE 250/2 x 12


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