Name: FY738C (5V 24V) 8 Channel Relay Terminal Block - GEYA
SKU: FY738C

Description

GEYA FY738C 8 Channel Relay Terminal Block is a professional-grade PLC output load current amplification and isolation board. Unlike standard DIY relay modules, this 8-way industrial relay board is enclosed in a durable, flame-retardant housing with an integrated DIN rail mount. It is engineered to safely amplify weak control signals (from 5V or 24V systems) to drive high-power industrial equipment, ensuring your delicate PLCs and microcontrollers remain fully protected from electrical surges and interference.

Core Industrial Applications

Centralized Control: Manages up to 8 independent circuits simultaneously, making it ideal for complex CNC machines, automated packaging lines, and smart building control cabinets.
Signal Isolation & Amplification: Perfectly installed at the digital output terminals of PLCs, MCUs, and time relays to amplify current for heavy loads while maintaining weak current control.
Space Optimization: High-density 8-channel design significantly reduces wiring clutter and saves valuable space inside the control panel.

Advanced Features & Build Quality

Engineered for reliability, the FY738C supports both NPN and PNP input signals, offering unmatched flexibility. Available in 5V and 24V coil voltage options, it caters to standard industrial power supplies. Each of the 8 channels features a dedicated LED status indicator for real-time monitoring and troubleshooting.

Equipped with premium MPA electromagnetic relays (CCC, TUV, UL certified) ensuring a long mechanical and electrical lifespan.
Secure screw terminal blocks for stable, vibration-resistant wiring (supports 0.2~2.5mm² cables).
Universal DIN rail mounting base compatible with TS15, TS28, and TS35 standard rails.
High dielectric strength rated at 2.5KV, 50Hz for 1 minute, providing superior physical electrical isolation.

Parameter and Specification

Specification Item	Details
Input Operate Voltage	5V / 24V (DC/AC ±10%) – Selectable
Relay Mounting	PCB Soldered
Allowable Switching Voltage	10A 250VAC/30VDC
Contact Rating	10A
Input Current per Channel	5.3mA
Operating Time	10ms max
Release Time	5ms max
Input/Output Connection	Screw Terminal Block
Suitable Cable	0.2~2.5mm²
Stripping Length	6-7mm
Din Rail Mounting Size	15/28/35mm
Dielectric Strength	2.5KV, 50Hz, 1MIN
Ambient Temperature	-20°C ~ 50°C

Dimensions (Series Reference)

Relay Quantities	Dimension (mm)
1	18 × 85 × 43.5
2	40 × 85 × 43.5
4	70 × 85 × 43.5
8 (FY738C)	130 × 85 × 43.5
16	250 × 85 × 43.5

Frequently Asked Questions (FAQs)

1. What makes the FY738C an “Industrial Grade” Relay Terminal Block?

Unlike basic DIY relay boards, the FY738C is designed specifically for industrial automation. It features a robust flame-retardant housing, a built-in DIN rail mounting base (compatible with 15/28/35mm rails), and advanced optocoupler isolation. This ensures it can withstand the harsh electrical environments of professional control cabinets while protecting expensive PLC mainboards.

2. How do I choose between the 5V and 24V versions?

The choice depends entirely on the output voltage of your control system (PLC, MCU, or sensor). If your controller outputs a 5V signal, select the 5V version. If you are using standard industrial PLCs (like Siemens, Mitsubishi, or Omron) which typically output 24V, you should select the 24V version.

3. What are the space requirements for this 8-way module?

The FY738C integrates 8 independent relay channels into a highly compact footprint. The dimensions are 130 × 85 × 43.5 mm. This high-density design significantly reduces wiring complexity and saves valuable DIN rail space compared to installing 8 separate single-channel relays.

4. Is it compatible with both NPN and PNP signals?

Yes! The FY738C is universally compatible. It supports both NPN (sinking) and PNP (sourcing) input signals. You simply need to wire the common terminal correctly (common anode for NPN, common cathode for PNP) according to your controller’s specifications.

5. What is the maximum load this 8-channel board can handle?

Each of the 8 channels operates independently and can handle a maximum switching current of 10A at 250VAC or 30VDC. This is more than sufficient for driving solenoid valves, contactors, small motors, and industrial lighting systems.

6. How should I wire the terminal blocks safely?

We recommend using standard industrial cables with a cross-section of 0.2~2.5mm². Strip the wire insulation back by exactly 6-7mm. Insert the wire fully into the screw terminal block and tighten securely to ensure there is no exposed copper, which prevents accidental short circuits between the closely packed 8 channels.

FY738C (5V 24V) 8 Channel Relay Terminal Block