Electromagnetic Industries LLP
1507 Beaumont St.
Baytown, TX, USA
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These devices provide a source of energy for circuit breaker and switch trip coil operation during a loss of AC control voltage.


CTD 1
Picture
120 VAC or 125 VDC Input
170 VDC or 125 VDC Output
330uF, 4.72 Joules
View Specifications

CTD 2
Picture
120 VAC or 125 VDC Input
170 VDC or 125 VDC Output
1500uF, 21.5 Joules
View Specifications

CTD 3
Picture
240 VAC Input
338 VDC Output
330uF, 19 Joules
View Specifications

CTD 4
Picture
CTD-4-120VAC 4500uF

CTD-4-240VAC 990uF
View Specifications

CTD 5
Picture
CTD-5-120VAC 4500uF w/Relay

CTD-5-240VAC 990uF w/Relay
View Specifications

The CTD-1 manufactured by Electromagnetic Industries is designed to provide a source of energy for a circuit breaker or switch to trip during a loss of normal AC or DC power.
These devices are protected against inadvertent short circuits, input from line surges and inductive kickback from trip coils. The nominal 120Volts AC or 125 DC is applied between “AC” and ‘COM” terminals. This voltage is half wave rectified and applied across the trip capacitor to give the output trip voltage. The charge stored in the capacitor (330 uF @168 VDC) is available between “+” and “COM” terminals for the trip coil operation. The half wave rectification circuitry provides the advantage of maintaining a common neutral connection from the input and output while still maintaining the charge in the trip capacitor after a loss of control power.
The capacitor is continuously charged when control power is applied. This provides energy for normal trip coil operation. Because mechanical relays are not used, energy from the trip coil operation is immediately available with the loss of control power. When the control power returns, the capacitor will recharge and will be able to supply energy for the next trip coil operation.
 
The CTD-2 manufactured by Electromagnetic Industries is designed to provide a source of energy for a circuit breaker or switch to trip during a loss of normal AC or DC power.
These devices are protected against inadvertent short circuits, input from line surges and inductive kickback from trip coils. The nominal 120Volts AC or 125 DC is applied between “AC” and ‘COM” terminals. This voltage is half wave rectified and applied across the trip capacitor to give the output trip voltage. The charge stored in the capacitor (1500 uF @ 168 VDC) is available between “+” and “COM” terminals for the trip coil operation. The half wave rectification circuitry provides the advantage of maintaining a common neutral connection from the input and output while still maintaining the charge in the trip capacitor after a loss of control power.
The capacitor is continuously charged when control power is applied. This provides energy for normal trip coil operation. Because mechanical relays are not used, energy from the trip coil operation is immediately available with the loss of control power. When the control power returns, the capacitor will recharge and will be able to supply energy for the next trip coil operation.
 
The CTD-3 manufactured by Electromagnetic Industries is designed to provide a source of energy for a circuit breaker or switch to trip during a loss of normal AC or DC power.
These devices are protected against inadvertent short circuits, input from line surges and inductive kickback from trip coils. The nominal 240Volts AC is applied between “AC” and ‘COM” terminals. This voltage is half wave rectified and applied across the trip capacitor to give the output trip voltage. The charge stored in the capacitor (330 uF @ 338 VDC) is available between “+” and “COM” terminals for the trip coil operation. The half wave rectification
circuitry provides the advantage of maintaining a common neutral connection from the input and output while still maintaining the charge in the trip capacitor after a loss of control power.
The capacitor is continuously charged when control power is applied. This provides energy for normal trip coil operation. Because mechanical relays are not used, energy from the trip coil operation is immediately available with the loss of control power. When the control power returns, the capacitor will recharge and will be able to supply energy for the next trip coil operation.
 
The CTD 4-120 manufactured by Electromagnetic Industries is designed to provide a source of energy for a circuit breaker or switch to trip during a loss of normal AC or DC power.
These devices are protected against inadvertent short circuits, input from line surges and inductive kickback from trip coils. The nominal 120Volts AC is applied between “AC” and ‘COM” terminals. The charge stored in the capacitor (4500 uF @ 168 VDC) is available between “+” and “COM” terminals for the trip coil operation. The half wave rectification circuitry provides the advantage of maintaining a common neutral connection from the input and output while still maintaining the charge in the trip capacitor after a loss of control power.
The capacitor is continuously charged when control power is applied. This provides energy for normal trip coil operation. Because mechanical relays are not used, energy from the trip coil operation is immediately available with the loss of control power. When the control power returns, the capacitor will recharge and will be able to supply energy for the next trip coil operation.
 
The CTD 4-240 manufactured by Electromagnetic Industries is designed to provide a source of energy for a circuit breaker or switch to trip during a loss of normal AC or DC power.
These devices are protected against inadvertent short circuits, input from line surges and inductive kickback from trip coils. The nominal 240Volts AC is applied between “AC” and ‘COM” terminals. The charge stored in the capacitor (990 uF @ 338 VDC) is available between “+” and “COM” terminals for the trip coil operation. The half wave rectification circuitry provides the advantage of maintaining a common neutral connection from the input and output while still maintaining the charge in the trip capacitor after a loss of control power.
The capacitor is continuously charged when control power is applied. This provides energy for normal trip coil operation. Because mechanical relays are not used, energy from the trip coil operation is immediately available with the loss of control power. When the control power returns, the capacitor will recharge and will be able to supply energy for the next trip coil operation.
 
The CTD 5-120 manufactured by Electromagnetic Industries is designed to provide a source of energy for a circuit breaker or switch to trip during a loss of normal AC or DC power. The CTD-5 also has an alarm relay to continuously monitor the input and output of the device. This relay is energized when the proper input and output voltages are present. The relay changes state if the input voltage is lost, or the output voltage drops to 85%. An LED indicates normal operation.
These devices are protected against inadvertent short circuits, input from line surges and inductive kickback from trip coils. The nominal 120Volts AC is applied between “AC” and ‘COM” terminals. The charge stored in the capacitor (4500 uF @ 168 VDC) is available between “+” and “COM” terminals for the trip coil operation. The half wave rectification circuitry provides the advantage of maintaining a common neutral connection from the input and output while still maintaining the charge in the trip capacitor after a loss of control power.
The capacitor is continuously charged when control power is applied. This provides energy for normal trip coil operation. Because mechanical relays are not used, energy from the trip coil operation is immediately available with the loss of control power. When the control power returns, the capacitor will recharge and will be able to supply energy for the next trip coil operation.
 
The CTD 5-240 manufactured by Electromagnetic Industries is designed to provide a source of energy for a circuit breaker or switch to trip during a loss of normal AC or DC power. The CTD-5 also has an alarm relay to continuously monitor the input and output of the device. This relay is energized when the proper input and output voltages are present. The relay changes state if the input voltage is lost, or the output voltage drops to 85%. An LED indicates normal operation.
These devices are protected against inadvertent short circuits, input from line surges and inductive kickback from trip coils. The nominal 240Volts AC is applied between “AC” and ‘COM” terminals. The charge stored in the capacitor (990 uF @ 338 VDC) is available between “+” and “COM” terminals for the trip coil operation. The half wave rectification
circuitry provides the advantage of maintaining a common neutral connection from the input and output while still maintaining the charge in the trip capacitor after a loss of control power.
The capacitor is continuously charged when control power is applied. This provides energy for normal trip coil operation. Because mechanical relays are not used, energy from the trip coil operation is immediately available with the loss of control power. When the control power returns, the capacitor will recharge and will be able to supply energy for the next trip coil operation.