
CCT40-100 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $44.99 | Condition is New, DWYER CCT40-100 / CCT40100 (NEW NO BOX), FREE SHIPPING | 98.8% |
![]() | $57.00 | Condition is New, DWYER CCT40-100 / CCT40100 (BRAND NEW), shipping cost = $12.90 | 99.7% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $38.00 | Condition is New – Open box, DWYER CCT40-100 / CCT40100 (NEW NO BOX), shipping cost = $12.90 | 99.7% |

The Dwyer CCT40-100 Transformer is a versatile and reliable solution for converting and isolating various electrical signals. This transformer is designed for use in 10-20 mA and 4-20 mA loop-powered applications, making it suitable for a wide range of industrial process control systems.
The transformer boasts a 4:1 current transformation ratio, allowing it to step down the current from the primary side to the secondary side while maintaining the same voltage. This ratio is ideal for applications where the load requires a smaller current than the available power source can provide.
The CCT40-100 Transformer is capable of handling a maximum primary current of 100 mA and a maximum secondary current of 25 mA. The transformer's primary winding is rated for a voltage of 125 VAC, while the secondary winding is rated for a voltage of 24 VAC.
One of the most notable features of this transformer is its loop-powered design. This means that the transformer derives its power from the current flowing through the secondary circuit, eliminating the need for an external power source. This not only simplifies installation but also reduces the overall system cost.
The Dwyer CCT40-100 Transformer is constructed using high-quality materials and components, ensuring long-lasting performance and reliability. It is RoHS compliant and UL listed, making it an excellent choice for applications in a variety of industries, including manufacturing, oil and gas, water and wastewater treatment, and more.
The transformer's compact size and rugged design make it suitable for use in harsh environments. It is also easy to install, with a simple wiring configuration and clear markings on the transformer housing to indicate the primary and secondary winding terminals.
In summary, the Dwyer CCT40-100 Transformer is a versatile and reliable solution for converting and isolating electrical signals in 10-20 mA and 4-20 mA loop-powered applications. Its loop-powered design simplifies installation, and its rugged construction ensures long-lasting performance in harsh environments. With its high-quality materials and UL listing, this transformer is an excellent choice for a wide range of industrial process control applications.
Pros and Cons of Buying a Dwyer CCT40-100 Transformer (10/20/50 4-20 mA)
1. **Versatility:** The Dwyer CCT40-100 transformer is a 4-20 mA output transformer, which means it can be used with various types of process instruments such as temperature, pressure, flow, and level transmitters. This versatility makes it a valuable addition to process control systems in various industries.
2. **Accuracy:** This transformer is known for its high accuracy, which is crucial in process control applications. It can handle input currents of 10, 20, or 50 mA and can output 4-20 mA signals, ensuring precise measurement and control.
3. **Reliability:** Dwyer is a reputable manufacturer of process control equipment, and the CCT40-100 transformer is no exception. It is built with high-quality components and is designed to withstand harsh industrial environments, ensuring long-term reliability.
4. **Isolation:** The transformer provides electrical isolation between the input and output, which is essential in process control applications. This feature protects the control system from potential ground loops and reduces the risk of electrical interference.
5. **Ease of Installation:** The transformer is easy to install, as it comes with mounting hardware and clear markings for the input and output terminals. It also has a compact design, making it suitable for use in confined spaces.
**Cons:**1. **Cost:** Compared to some other transformers in the market, the Dwyer CCT40-100 transformer may be more expensive. However, its high accuracy, reliability, and versatility make it a worthwhile investment for many applications.
2. **Limited Input Voltage Range:** The transformer can only handle input voltages of 115VAC or 230VAC, which may not be suitable for all applications.
**Conclusion:**The Dwyer CCT40-100 transformer is a reliable and accurate solution for various process control applications that require 4-20 mA output signals. Its versatility, ease of installation, and electrical isolation make it a valuable addition to industrial control systems. While it may be more expensive than some other transformers, its high-quality components and precise measurement capabilities make it a worthwhile investment.
**Recommendation:**If you require a 4-20 mA output transformer for process control applications, the Dwyer CCT40-100 transformer is a strong recommendation. Its accuracy, reliability, and versatility make it an excellent choice for various industries and applications. However, if your input voltage range is outside the transformer's capabilities or if cost is a significant concern, you may want to explore other options in the market.
Details:
Current transformer, 10/20/50 a input, 4-20 ma output, split core.
specifications indusswitch:
- brand: Dwyer Instruments
- mpn: Cct40-100
- part type: Transformer
- features: Current Transformer, 10/20/50 A Input, 4-20 Ma Output, Split Core.
- item height: 2.300
- item length: 7.000
- width: 2.800
- weight: 0.3000
payments indusswitch:
- credit card: diners-club
- other
- wallet: paypal
offer indusswitch:
- availability: in stock
- in stock #: 3
- prices: $38.00–$57.00
- item condition:
- New
- New – Open box
- started: february 14, 2025
- options: ship-to-home
- sold #: 23
shipping indusswitch:
- service: standard
- transit: 5-11 days
- class: standard
- type: fixed
returns indusswitch:
- method: money back
- policy: returns accepted
- time: 60 days
- paid by: seller
seller indusswitch:
- rating: 94.9%
- # reviews: 37679
- city: buffalo grove, illinois
general indusswitch:
- category: Business & Industrial > Electrical Equipment Supplies > Rocker Switches
Also Purchased:
- DA-7031-153-9: PRESSURE SWITCH, Dwyer Instruments
- 1626-5: PRESSURE SWITCH, Dwyer
- 1823-00: PRESSURE SWITCH, Dwyer
- DA-31-2-9: PRESSURE SWITCH, Dwyer Instruments Mercoid
- 1950-00-2F: PRESSURE SWITCH, Dwyer
- 628-09-GH-P1-E1-S1: TRANSMITTER, Dwyer Instruments
- F6-HPS-11: LEVEL, Dwyer Instruments
- DH3-005: PRESSURE SWITCH, Dwyer
- 75676: GAUGE BOTTLE, Dwyer Instruments
- CCT70-200: TRANSFORMER, Dwyer Instruments
- FSW2-DNPN-30: WATER LEVEL SWITCH, Dwyer Instruments


