704-399-4248 sales@sethermal.com

RELAYS

SOLID STATE RELAYS

SSR 1 with Heat Sink & Fan.
These units are rated for 5-100 amps with operational voltages up to 600 VAC single phase. This series is zero fired, high isolation > 50 meg ohms/500DC, or phase fired. The input signal can be 3-32 VDC, 15-60 VAC, 80-250 VAC, or 4-20mA.
SSR 2 with Heat Sink & FanThese units are rated for 5-100 amps with operational voltages up to 600 VAC three-phase two leg switching. This series is zero fired, high isolation > 50 meg ohms/500DC, or phase fired. The input signal can be 3-32 VDC, 15-60 VAC, 80-250 VAC, or 4-20mA.
SSR 3 with Heat Sink & Fan
These units are rated for 25-100 amps with operational voltages up to 600 VAC three-phase three leg switching. This series is zero or phase fired. The input signal can be 4-32 VDC, 250 VAC, or 4-20mA.

 

SCR POWER CONTROLLERS

EPS3-60-H(480 VAC) Digital Power Regulator (3-Pole)

Digital Power Controllers/Relay
Size: 7″ H (173mm) x 9″ D(229mm) x 3.75″ W (96mm)

EPS3-60-H(480 VAC) Digital Power Regulator (3-Pole)
Rated Current: 60 A Max
Main power supply: 280-550 VAC
Input: 4-20 mA, 1-5 V, 2-10 V, 0-5 V, 0-10 V, or VR10kOhms Field selectable
Phase Fired or Zero Crossover Switching Field Selectable
Operating Temperature: -20°C +80°C; 35-85% RH
Housing Material: Intensive PC + ABS (UL-94V0)
CE Certified; 110/220 VAC Auxiliary; Integral Fan & Fused

 

TPS3-200-H (480VAC) SCR Digital Power Regulator (3-Pole)

Heat Calculation: Current x 1.3 Watts x Phase = Wattage Generated by SCR’s
Size: 8.125″ H (210mm) x 10.25″ D(260mm) x 5.5″ W (140mm)
TPS3-200-H (480VAC) SCR Digital Power Regulator (3-Pole)
Rated Current: 200A Max
Main power supply: 280-550 VAC
Input: 4-20 mA, 0-20mA, 1-5V, 2-10V, 0-5V, 0-10V, or VR-10k Ohms Field selectable
Phase Fired or Zero Crossover Switching Field Selectable
Operating Temperature: -20°C +80°C; 35-85% RH
Housing Material: Intensive PC + ABS (UL-94V0)
CE Certified; 110 VAC Auxiliary; Integral Fan & Fused

DSC-140 Single Pole

DCS-140

Digital Power Regulator (1-Pole).

Rated Current: 10 A max. (Semi-Conductor Internal Fuse); Single Current Duration: 1500A 1 cycle of power frequency; Main Power Supply: 120 VAC ± 10%; Input: 4-20 mA, 0-20 mA, 1-5 V, 2-10 V, 0-5 V, 0-10 V, or VR-10kOhm

MECHANICAL RELAYS

  • Magnetic Connectors
  • NEMA 1 Enclosure Available
  • 3 Pole with 120V holding coil-specify other coil rating
  • Typical Cycling 3 times/minute

MERCURY RELAYS

Mercury Displacement Relays are all designed and built to meet the most exacting demands of the industry. They have won their high place in the electrical field by doing the tough and tricky jobs that ordinary equipment could at best do in an uncertain manner. They have proven their ability to stand up to the most adverse conditions of temperature, dust and moisture, in all types of applications. All the care required for the manufacture of high-grade instruments is used in the manufacture of the switches. All switch parts are specially cleaned, and contamination is avoided by use of tweezers, gloves, etc., when making assemblies. Contactors are hermetically sealed with high quality glass to metal seals. The stainless steel tube is totally encapsulated in high grade epoxy to prevent moisture damage and voltage breakdown through the protective coating.

The coils are wound on compact nylon bobbins and molded on to the metal tube to provide minimum power loss. This allows for low coil power required to actuate the contactor. This also enables the units to handle high loads with minimum derating due to higher ambient temperatures. Internal gasses prevent excessive arcing between the mercury and the electrodes which enables the unit to function for millions of cycles with very low contact resistance, and minimum deterioration of the internal parts. Available in all standard coil voltages, in single, two, three and four pole arrangements. Other coil voltages available upon request.

ADDITIONAL INFORMATION

Calculators

Power Flow Rate Temp Calculator

Calculate the electrical power, flow rate or temperature requirement.
airflow in standard cubic feet per minute
temperature rise in degrees F from the inlet to the exhaust
Watts = SCFM x ΔT/2.5

Temperature Conversion Calculator

Calculate the electrical power, flow rate or temperature requirement.
°F = ((( °C * 9) / 5 ) + 32)
°C = ((( °F - 32) * 5 ) / 9)

Three-Phase Unit Calculator

Fill in two values to find the 3rd.
W = LC * (V * √2)
V = (W / LC) / √2
LC = W / (V * √2)

Single Phase Unit Calculator

Fill in two values to find the 3rd.
W = LC * V
V = LC * W
LC = W / V

Ohms Law Calculator

Fill in two values to find the other two.

O = V / A

O = V² / W

O = W / A²

V = A * O = A * (V/A)

V = √(W * O)

V = W / A

A = V / O

A = W/ V

A = √(W / O)

W = A * V

W = V² / O

W = A² * O

Heat Transfer Through Convection Calculator

ρ = density (lb/ft3)

V = volume flow rate (ft3/hour)

Cp = specific heat (Btu/lb°F)

Ta-Tb = temperature differential (°F)

Q = ρ x V x Cp x (Ta-Tb)


Fill in four values

ρ = density (lb/ft3)
V = volume flow rate (ft3/hour)
Cp = specific heat (Btu/lb°F)
Ta-Tb = TD (°F)
Q = ρ x V x Cp x (Ta-Tb)

ACFM to SCFM

ACFM = airflow in actual cubic feet per minute

P = gage pressure (psi)

T = gas temperature °R = 460 + °F

SCFM = airflow in standard cubic feet per minute


Find Standard Cubic Feet per Minute based on data from your Actual Cubic Feet per Minute Rotameter

airflow in actual cubic feet per minute
gage pressure (psi)
gas temperature °R = 460 + °F
airflow in standard cubic feet per minute

Standard Flow Rate (SCFM) Calculator

Calculate the SCFM.
Actual cubic feet per minute
Actual pounds per square inch at Gauge
Actual temperature in °F. °R = 460 + °F
CFM * (PSI actual / 14.7psi)*(528°R / T actual)

Pressure Conversion

Fill in one value to calculate the other.
PSI = Bar * 14.504
Bar = PSI / 14.504

Mass Flow to volume Metric Flow

Fill in one value to calculate the other two
kg/h = Kilogram Per Hour (lb/min multiply by 27.216)
Lbs/min = Pounds per minute (kg/h divide by 27.216)
SCFM = Standard cubic feet per minute

Power Flow Rate Temp Calculator

Calculate the electrical power, flow rate or temperature requirement.
airflow in standard cubic feet per minute
temperature rise in degrees F from the inlet to the exhaust
Watts = SCFM x ΔT/2.5

Temperature Conversion Calculator

Calculate the electrical power, flow rate or temperature requirement.
°C = ((( °F - 32) * 5 ) / 9)
°F = ((( °C * 9) / 5 ) + 32)

Three-Phase Unit Calculator

Fill in two values to find the 3rd.
W = LC * (V * √2)
V = (W / LC) / √2
LC = W / (V * √2)

Single Phase Unit Calculator

Fill in two values to find the 3rd.
W = LC * V
V = LC * W
LC = W / V

Ohms Law Calculator

Fill in two values to find the other two.

O = V / A

O = V² / W

O = W / A²

V = A * O = A * (V/A)

V = √(W * O)

V = W / A

A = V / O

A = W/ V

A = √(W / O)

W = A * V

W = V² / O

W = A² * O

Heat Transfer Through Convection Calculator

ρ = density (lb/ft3)

V = volume flow rate (ft3/hour)

Cp = specific heat (Btu/lb°F)

Ta-Tb = temperature differential (°F)

Q = ρ x V x Cp x (Ta-Tb)


Fill in four values

ρ = density (lb/ft3)
V = volume flow rate (ft3/hour)
Cp = specific heat (Btu/lb°F)
Ta-Tb = TD (°F)
Q = ρ x V x Cp x (Ta-Tb)

ACFM to SCFM

ACFM = airflow in actual cubic feet per minute

P = gage pressure (psi)

T = gas temperature °R = 460 + °F

SCFM = airflow in standard cubic feet per minute


Find Standard Cubic Feet per Minute based on data from your Actual Cubic Feet per Minute Rotameter

airflow in actual cubic feet per minute
gage pressure (psi)
gas temperature °R = 460 + °F
airflow in standard cubic feet per minute

Standard Flow Rate (SCFM) Calculator

Calculate the SCFM.
Actual cubic feet per minute
Actual pounds per square inch at Gauge
Actual temperature in °F. °R = 460 + °F
CFM * (PSI actual / 14.7psi)*(528°R / T actual)

Pressure Conversion

Fill in one value to calculate the other.
PSI = Bar * 14.504
Bar = PSI / 14.504

Mass Flow to volume Metric Flow

Fill in one value to calculate the other two
Kg/h = Kilogram Per Hour (lb/min multiply by 27.216)
Lbs/min = Pounds per minute (kg/h divide by 27.216)
SCFM = Standard cubic feet per minute