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Wallco Inc. is a factory authorized SolaHD distributor offering the complete line of SBE Series Encapsulated Copper Wound Transformers for industrial control panels, machine control, OEM equipment, automation systems, and industrial machinery. The SBE Series is engineered to deliver reliable secondary voltage during the high inrush conditions created by contactors, relays, solenoids, motor starters, and other electromagnetic control devices.
SolaHD SBE Series Encapsulated Copper Wound Transformers feature interleaved copper windings, epoxy encapsulation, and a 55°C temperature rise to help protect the transformer core and coils from moisture, dirt, dust, oil, and other industrial contaminants. Available in ratings from 50 VA through 1000 VA, these transformers provide excellent voltage regulation while helping extend the life of nearby electrical components by minimizing heat inside the control panel.
The SBE Series is available in multiple primary and secondary voltage configurations to support a wide range of industrial control applications. Optional factory-installed fuse holder configurations and finger-safe accessories provide additional flexibility for machine builders, panel shops, OEMs, and industrial automation systems.
Download the complete SolaHD SBE Series Encapsulated Copper Wound Transformers Datasheet for detailed specifications, available voltage configurations, dimensions, wiring information, fuse holder options, accessories, and complete catalog listings.
Download the SBE Series Encapsulated Copper Wound Transformers Datasheet (PDF)
Download the SolaHD Industrial Control Transformer Selection Guide (PDF)
Browse the complete SBE Series Encapsulated Copper Wound Transformers below to find the correct model based on your required primary voltage, secondary voltage, VA rating, frequency, and control circuit requirements.
The SolaHD E750WB is a 750 VA SBE Series epoxy-encapsulated, copper-wound industrial control transformer configured for 220-480 VAC primary to 110-120 VAC secondary. Factory-installed Class CC primary fuse holder with FB2X midget-type secondary fuse holder and finger-safe covers; fuses not included.
The SolaHD E750WA is a 750 VA SBE Series epoxy-encapsulated, copper-wound industrial control transformer configured for 220-480 VAC primary to 110-120 VAC secondary. Factory-installed Class CC primary fuse holder with Type 3AG secondary fuse holder and finger-safe covers; fuses not included.
The SolaHD E750W is a 750 VA SBE Series epoxy-encapsulated, copper-wound industrial control transformer configured for 220-480 VAC primary to 110-120 VAC secondary. Factory-installed Class CC primary fuse holder; midget-type secondary fuse-holder components supplied without finger-safe covers; secondary assembly requires the FB2 accessory; fuses not included.
The SolaHD E750EWB is a 750 VA SBE Series epoxy-encapsulated, copper-wound industrial control transformer configured for 120 x 240 VAC primary to 24 VAC secondary at 60 Hz. Factory-installed Class CC primary fuse holder with FB2X midget-type secondary fuse holder and finger-safe covers; fuses not included.
Selecting the correct SolaHD SBE transformer begins with identifying the available primary voltage, required secondary voltage, operating frequency, total sealed VA, and total inrush VA of the control circuit. Industrial control devices such as contactors, relays, solenoids, and motor starters can draw several times their normal operating current when first energized, so the transformer must provide sufficient inrush capacity while maintaining dependable secondary voltage.
The transformer's continuous VA rating must meet or exceed the total steady-state load of all devices that may remain energized simultaneously. The selected model must also provide enough inrush performance for every electromagnetic device that may energize at the same time.
SolaHD organizes the SBE Encapsulated Series into five electrical configuration groups. Each group identifies a specific combination of primary voltage, secondary voltage, and frequency. The catalog number then identifies the transformer VA rating and electrical configuration.
| Group | Primary Voltage | Secondary Voltage | Frequency | Example |
|---|---|---|---|---|
| Group 1 | 120 × 240 VAC | 24 VAC | 60 Hz | E050E |
| Group 2 | 220 × 440, 230 × 460, or 240 × 480 VAC | 110, 115, or 120 VAC | 50/60 Hz or 60 Hz, depending on the applied voltage | E050 |
| Group 3 | 240 × 480 VAC | 24 VAC | 60 Hz | E050D |
| Group 4 | 208, 240, or 277 VAC | 120 or 24 VAC | 60 Hz | E050JL |
| Group 5 | 208, 240, 480, or 600 VAC; also 200, 230, 460, or 575 VAC | 120 or 24 VAC; also 115 or 23 VAC | 60 Hz | E050JN |
The letters within the SBE catalog number identify the electrical configuration. For example, E050, E050E, E050D, E050JL, and E050JN are all 50 VA transformers, but they provide different primary-voltage and secondary-voltage combinations. Always select the complete catalog number that matches the application's voltage and frequency requirements.
Certain Group 1 and Group 2 models are available with factory-installed primary fuse holders and different secondary fuse-holder configurations. The suffix at the end of the catalog number identifies the factory-installed option.
| Option | Configuration | Finger-Safe Covers |
|---|---|---|
| Standard Model | Standard encapsulated transformer with the applicable secondary fuse-holder provisions for that model | No |
| W Option | Factory-installed Class CC rejection-type primary fuse holder with a midget-style secondary fuse-holder configuration; secondary assembly may be required | No |
| WA Option | Factory-installed Class CC primary fuse holder with a Type 3AG glass or ceramic secondary fuse holder | Yes |
| WB Option | Factory-installed Class CC primary fuse holder with a midget-style secondary fuse holder | Yes |
Fuses are not included. Not every suffix is offered for every VA rating, so the complete catalog number should be confirmed before ordering.
| Accessory | Description |
|---|---|
| FB2 | Field-installed secondary fuse-holder kit for one 1/4 × 1-1/4 inch Type 3AG glass or ceramic fuse |
| FB2X | Secondary fuse holder for one 13/32 × 1-1/2 inch midget-type cartridge fuse on applicable transformer models |
| FBP | Field-installed primary fuse-holder kit for two Class CC rejection-type fuses |
| FBPC1 | Primary fuse block and finger-safe cover kit for two Class CC rejection-type fuses |
| IP20 | Field-installed primary and secondary IEC touch-proof terminal cover kit |
| SBEDIN | DIN-rail adapter kit for mounting an IEC circuit breaker |
Accessory compatibility depends on the transformer model and electrical configuration. Group 4 and Group 5 models accept one FB2 secondary fuse holder and do not accept the FB2X secondary fuse holder.
Each is a 50 VA SBE transformer, but each catalog number belongs to a different voltage configuration group. The available primary voltage, secondary voltage, and connection arrangement vary by model.
The suffix identifies the factory-installed fuse-holder configuration. W models include a Class CC primary fuse-holder arrangement without finger-safe covers. WA models use a Type 3AG secondary fuse holder with covers, while WB models use a midget-style secondary fuse holder with covers.
No. Fuse holders may be included or factory installed depending on the catalog number, but the actual fuses are not included.
If you're unsure which SolaHD SBE transformer is best for your application, our team can help identify the correct catalog number based on your primary voltage, secondary voltage, continuous VA, inrush VA, frequency, and fuse-holder requirements.