PTC Textile Heating Chamber Design
Budget: ₹1,500 – ₹12,500 INR
Here is the full electrical circuit diagram along with a detailed industrial-grade components list for the PTC-based textile heating chamber.
---
Electrical Circuit Diagram Overview
+----------------------------[AC 3-Phase Input]----------------------------+
| L1 L2 L3 |
| |
+---+---+ +---------+ +------------------+ +------------+ |
| MCB | --> | Contactor| ---> | Solid State Relay| ---> | PTC Heater | |
+---+---+ +---------+ +--------+---------+ +------------+ |
| | |
| +------v------+ |
| | PID Temp Ctrl| |
| +------+-------+ |
| | |
| +--------------------+ | |
| | Temp Sensor (NTC) | <---------+ |
| +--------------------+ |
| |
| +-----------------------------+ +----------------------+ |
+----->| 12V DC Power Supply Unit |-------->| Blower Fan (12V DC) | |
+-----------------------------+ +----------------------+ |
|
+-----> Emergency Stop, Safety Thermostat, Overload Relay (Normally Closed)|
| Wired in series to cut supply to Contactor Coil |
+---------------------------------------------------------------------------+
Industrial-Grade Components List (BOM)
Component Specification Qty Purpose
PTC Heating Element 220V AC, 300–500W each, ceramic or aluminum housing 6–12 Heating textile chamber
PID Temperature Controller REX C100, Omron E5CC or similar 1 Precision temperature regulation
Solid State Relay (SSR) 40A, 220V AC output, with heat sink 1 Switching PTC heaters with PID control
Temperature Sensor K-type thermocouple or NTC 10K 1 Feedback to PID controller
Contactor (AC) 3-pole, 25–32A, 230V coil 1 Main power switching
MCB (Mini Circuit Breaker) 3P, 32A, Type C or D 1 Overcurrent protection
Power Supply 220V AC to 12V DC, 5A minimum 1 Power for blower fan and control panel
Blower Fan 12V DC, 120mm or larger, metal housing 1–2 Air circulation inside chamber
Thermostat (Safety Cutoff) Mechanical, NC type, trips at 90–100°C 1 Secondary overheat protection
Emergency Stop Button Mushroom type, twist-release 1 Manual cutoff for safety
LED Indicator 22mm panel mount (red/green) 2–3 Status indicators
Wiring & Cables 2.5–4.0mm² for AC, 0.5–1.0mm² for control wiring - General electrical wiring
Panel Box Metal or ABS control panel with door 1 Housing all controllers and breakers
Terminal Blocks DIN rail mounted 1 set Neat and secure connections
Cooling Fan for Panel 80mm or 120mm 1 To cool SSR/relay heat sinks
Fuse Holders + Fuses For additional component protection As needed Safety
---
Notes:
Use heat-resistant cables (silicone/Teflon) for PTC heater lines.
SSR must be mounted on a metal heatsink with thermal paste.
Place the temperature sensor in airflow, not near heating element directly.
Use industrial relays/contactors rated for heater load
---
Electrical Circuit Diagram Overview
+----------------------------[AC 3-Phase Input]----------------------------+
| L1 L2 L3 |
| |
+---+---+ +---------+ +------------------+ +------------+ |
| MCB | --> | Contactor| ---> | Solid State Relay| ---> | PTC Heater | |
+---+---+ +---------+ +--------+---------+ +------------+ |
| | |
| +------v------+ |
| | PID Temp Ctrl| |
| +------+-------+ |
| | |
| +--------------------+ | |
| | Temp Sensor (NTC) | <---------+ |
| +--------------------+ |
| |
| +-----------------------------+ +----------------------+ |
+----->| 12V DC Power Supply Unit |-------->| Blower Fan (12V DC) | |
+-----------------------------+ +----------------------+ |
|
+-----> Emergency Stop, Safety Thermostat, Overload Relay (Normally Closed)|
| Wired in series to cut supply to Contactor Coil |
+---------------------------------------------------------------------------+
Industrial-Grade Components List (BOM)
Component Specification Qty Purpose
PTC Heating Element 220V AC, 300–500W each, ceramic or aluminum housing 6–12 Heating textile chamber
PID Temperature Controller REX C100, Omron E5CC or similar 1 Precision temperature regulation
Solid State Relay (SSR) 40A, 220V AC output, with heat sink 1 Switching PTC heaters with PID control
Temperature Sensor K-type thermocouple or NTC 10K 1 Feedback to PID controller
Contactor (AC) 3-pole, 25–32A, 230V coil 1 Main power switching
MCB (Mini Circuit Breaker) 3P, 32A, Type C or D 1 Overcurrent protection
Power Supply 220V AC to 12V DC, 5A minimum 1 Power for blower fan and control panel
Blower Fan 12V DC, 120mm or larger, metal housing 1–2 Air circulation inside chamber
Thermostat (Safety Cutoff) Mechanical, NC type, trips at 90–100°C 1 Secondary overheat protection
Emergency Stop Button Mushroom type, twist-release 1 Manual cutoff for safety
LED Indicator 22mm panel mount (red/green) 2–3 Status indicators
Wiring & Cables 2.5–4.0mm² for AC, 0.5–1.0mm² for control wiring - General electrical wiring
Panel Box Metal or ABS control panel with door 1 Housing all controllers and breakers
Terminal Blocks DIN rail mounted 1 set Neat and secure connections
Cooling Fan for Panel 80mm or 120mm 1 To cool SSR/relay heat sinks
Fuse Holders + Fuses For additional component protection As needed Safety
---
Notes:
Use heat-resistant cables (silicone/Teflon) for PTC heater lines.
SSR must be mounted on a metal heatsink with thermal paste.
Place the temperature sensor in airflow, not near heating element directly.
Use industrial relays/contactors rated for heater load