Block ST Transformer Range

Block Brand: Block

The BLOCK ST series offers a range of high-performance transformers designed for industrial and commercial applications. These transformers are engineered to provide reliable and efficient voltage conversion, ensuring optimal performance of electrical systems.

The ST series includes various models tailored to different power requirements, featuring robust construction and high-quality materials to withstand harsh operating conditions. With advanced thermal management and protection features, BLOCK ST transformers guarantee safe and stable operation, minimizing downtime and maintenance costs.

Easy to install and integrate, these transformers are ideal for use in automation, control systems, and other demanding environments where consistent power delivery is crucial.

Choose BLOCK ST products for their proven reliability, durability, and efficiency in powering your critical applications.

Description Image Product Buy Pricing (Ex VAT) Primary Voltages Secondary Voltages Power Rating Height Length Width
Block ST 100/23/23, 100VA Transformer, 230V to 230V
Block ST 100/23/23, 100VA Transformer, 230V to 230V
Extended range
Order code: 51-5254
MPN: ST 100/23/23

2 available to back orderBack-order availability date - 28/12/2025
1+ £42.33
Price per unit Ex VAT 		230V 230V 100VA 95mm 84mm 76mm
Block ST 1000/23/23, 1000VA Transformer, 230V to 230V
Block ST 1000/23/23, 1000VA Transformer, 230V to 230V
Extended range
Order code: 51-5258
MPN: ST 1000/23/23

Available to back orderBack order, lead time 11 days
1+ £188.96
Price per unit Ex VAT 		230V 230V 1000VA 148mm 150mm 154mm
Block ST 130/23/24, 130VA Transformer, 230V to 24V
Block ST 130/23/24, 130VA Transformer, 230V to 24V
Extended range
Order code: 51-5261
MPN: ST 130/23/24

3 available to back orderBack-order availability date - 28/12/2025
1+ £53.27
Price per unit Ex VAT 		230V 24V 130VA 105mm 96mm 78mm
Block ST 20/23/12, 20VA Transformer, 230V to 12V
Block ST 20/23/12, 20VA Transformer, 230V to 12V
Extended range
Order code: 51-5270
MPN: ST 20/23/12

4 available to back orderBack-order availability date - 28/12/2025
1+ £33.47
Price per unit Ex VAT 		230V 12V 20VA 81mm 66mm 56mm
Block ST 20/23/23, 20VA Transformer, 230V to 230V
Block ST 20/23/23, 20VA Transformer, 230V to 230V
Extended range
Order code: 51-5271
MPN: ST 20/23/23

4 available to back orderBack-order availability date - 28/12/2025
1+ £31.12
Price per unit Ex VAT 		230V 230V 20VA 81mm 66mm 56mm
Block ST 250/23/23, 250VA Transformer, 230V to 230V
Block ST 250/23/23, 250VA Transformer, 230V to 230V
Extended range
Order code: 51-5275
MPN: ST 250/23/23

Available to back orderBack order, lead time 11 days
1+ £72.97
Price per unit Ex VAT 		230V 230V 250VA 105mm 96mm 103mm
Block ST 250/23/24, 250VA Transformer, 230V to 24V
Block ST 250/23/24, 250VA Transformer, 230V to 24V
Extended range
Order code: 51-5276
MPN: ST 250/23/24

4 available to back orderBack-order availability date - 28/12/2025
1+ £72.73
Price per unit Ex VAT 		230V 24V 250VA 105mm 96mm 103mm
Block ST 320/23/23, 320VA Transformer, 230V to 230V
Block ST 320/23/23, 320VA Transformer, 230V to 230V
Extended range
Order code: 51-5282
MPN: ST 320/23/23

7 available to back orderBack-order availability date - 28/12/2025
1+ £86.79
Price per unit Ex VAT 		230V 230V 320VA 114mm 105mm 103mm
Block ST 500/23/23, 500VA Transformer, 230V to 230V
Block ST 500/23/23, 500VA Transformer, 230V to 230V
Extended range
Order code: 51-5288
MPN: ST 500/23/23

4 available to back orderBack-order availability date - 28/12/2025
1+ £123.07
Price per unit Ex VAT 		230V 230V 500VA 123mm 120mm 122mm
Block ST 63/23/23, 63VA Transformer, 230V to 230V
Block ST 63/23/23, 63VA Transformer, 230V to 230V
Extended range
Order code: 51-5293
MPN: ST 63/23/23

5 available to back orderBack-order availability date - 28/12/2025
1+ £38.27
Price per unit Ex VAT 		230V 230V 63VA 89mm 78mm 60mm
Block ST 63/23/24, 63VA Transformer, 230V to 24V
Block ST 63/23/24, 63VA Transformer, 230V to 24V
Extended range
Order code: 51-5294
MPN: ST 63/23/24

3 available to back orderBack-order availability date - 28/12/2025
1+ £40.29
Price per unit Ex VAT 		230V 24V 63VA 89mm 78mm 60mm
Block ST 800/23/23, 800VA Transformer, 230V to 230V
Block ST 800/23/23, 800VA Transformer, 230V to 230V
Extended range
Order code: 51-5300
MPN: ST 800/23/23

1 available to back orderBack-order availability date - 28/12/2025
1+ £169.28
Price per unit Ex VAT 		230V 230V 800VA 148mm 150mm 128mm
Block ST 160/4/24, 160VA Transformer, 400V to 24V
Block ST 160/4/24, 160VA Transformer, 400V to 24V
Extended range
Order code: 51-5267
MPN: ST 160/4/24

2 available to back orderBack-order availability date - 28/12/2025
1+ £59.32
Price per unit Ex VAT 		400V 24V 160VA 105mm 96mm 88mm
Block ST 20/4/23, 20VA Transformer, 400V to 230V
Block ST 20/4/23, 20VA Transformer, 400V to 230V
Extended range
Order code: 51-5273
MPN: ST 20/4/23

22 available to back orderBack-order availability date - 28/12/2025
1+ £33.91
Price per unit Ex VAT 		400V 230V 20VA 81mm 66mm 56mm
Block ST 250/4/23, 250VA Transformer, 400V to 230V
Block ST 250/4/23, 250VA Transformer, 400V to 230V
Extended range
Order code: 51-5278
MPN: ST 250/4/23

1 in stock, despatched same dayBack-order availability date - 28/12/2025
1+ £71.89
Price per unit Ex VAT 		400V 230V 250VA 105mm 96mm 103mm
Block ST 2500/4/23, 2500VA Transformer, 400V to 230V
Block ST 2500/4/23, 2500VA Transformer, 400V to 230V
Extended range
Order code: 51-5280
MPN: ST 2500/4/23

3 available to back orderBack-order availability date - 28/12/2025
1+ £426.59
Price per unit Ex VAT 		400V 230V 2500VA 182mm 192mm 184mm
Block ST 400/4/24, 400VA Transformer, 400V to 24V
Block ST 400/4/24, 400VA Transformer, 400V to 24V
Extended range
Order code: 51-5286
MPN: ST 400/4/24

5 available to back orderBack-order availability date - 28/12/2025
1+ £101.07
Price per unit Ex VAT 		400V 24V 400VA 123mm 120mm 102mm
Block ST 250/44/23, 250VA Transformer, 440V to 230V
Block ST 250/44/23, 250VA Transformer, 440V to 230V
Extended range
Order code: 51-5279
MPN: ST 250/44/23

1 available to back orderBack-order availability date - 28/12/2025
1+ £72.94
Price per unit Ex VAT 		440V 230V 250VA 105mm 96mm 103mm


Trustpilot