Description

GRD9S-F100 IoT Smart MCB

The GEYA GRD9S-F100 is the basic, non-residual-current model in the GRD9S smart circuit breaker family. It combines miniature circuit breaker protection with electrical monitoring, wired communication and local or remote switching for low-voltage terminal distribution systems.

Monitoring and Protection

The catalogue lists real-time monitoring of voltage, current, power, power factor, energy and temperature. Protection functions for the basic model include overvoltage, undervoltage, overload, short-circuit and overcurrent protection.

Operation – Local manual or electric operation, remote control and timed switching.
Event visibility – Switch status, faults and alarms can be collected for system monitoring.
Protection boundary – F100 does not add the residual-current function identified by the L or R suffix.

RS485 Communication

The F100 model code specifies standard RS485 communication and Modbus support. This wired interface is intended for fixed equipment and building or industrial monitoring systems. Wireless communication belongs to the corresponding W, G or Z variant and should not be assumed for the base F100.

Ratings and Selection

Catalogue configurations cover 1P, 2P, 3P and 4P arrangements, B, C or D trip curves and a 6 kA standard breaking capacity. The technical table lists AC 230 V for 1P/2P and AC 400 V for 3P/4P at 50/60 Hz; confirm these values against the selected product marking.

Applications and Installation

The GRD9S series is intended for indoor low-voltage terminal distribution in industrial, commercial, residential and infrastructure projects. Install the selected device vertically on a 35 mm DIN rail and have wiring, commissioning and periodic testing completed by a qualified electrician.

Select the Correct GRD9S Variant

Choose the GRD9S-F100L smart RCBO when residual-current protection is required. Use a W-suffix model when the specification requires Wi-Fi in addition to RS485.

GRD9S-F100 Smart MCB RS485 Wiring Diagram

Technical Parameters

The values below are catalogue data for the GRD9S basic model. Confirm the required pole arrangement, rated current and trip curve before ordering.

Electrical Ratings and Communication

Parameter	Specification
Product type	IoT miniature circuit breaker; basic model without residual-current protection
Reference criterion	GB/T 10963
Poles	1P, 2P, 3P, 4P
Catalogue technical-table voltage	AC 230 V for 1P/2P; AC 400 V for 3P/4P; 50/60 Hz. Confirm against the selected product marking.
Preferred rated currents	20, 32, 63 A; consult GEYA for other shell-frame ratings
Trip curves	B, C, D
Standard breaking capacity	Icu = Ics = 6,000 A
Communication	RS485; Modbus

Operation and Installation

Parameter	Specification
Mechanical / electrical life	More than 15,000 / more than 6,000 operations
Closing / opening time	Less than 1.5 s / less than 1.0 s
Ambient temperature	-5°C to 70°C
Mounting	Vertical installation on 35 mm DIN rail
Terminal conductor range by current	1.5 mm² at 10 A; 2.5 mm² at 16–20 A; 4 mm² at 25 A; 6 mm² at 32 A; 10 mm² at 40–50 A; 16 mm² at 63 A; 25 mm² at 80 A; 35 mm² at 100 A
Terminal tightening torque	3.5 N·m

Installation and commissioning must be completed by a qualified electrician. Match conductor size, protection settings and device configuration to the project design and applicable requirements.

FAQs

Is the GRD9S-F100 an MCB or an RCBO?

It is the basic smart MCB in the GRD9S family. It does not add the residual-current function identified by the L or R suffix.

Which pole and voltage options are listed?

The catalogue technical table lists 1P and 2P for AC 230 V, and 3P and 4P for AC 400 V, at 50/60 Hz. Confirm the values against the selected product marking.

Which communication interface does F100 use?

The base F100 uses RS485 with Modbus communication. Wi-Fi, 4G and Zigbee are identified by the W, G and Z communication suffixes.

Which rated currents and trip curves are available?

Catalogue-preferred rated currents are 20, 32 and 63 A, with B, C or D trip curves. Consult GEYA if the project requires another shell-frame rating.

Does the F100 provide electrical monitoring?

Yes. The catalogue lists monitoring of voltage, current, power, power factor, energy and temperature, together with switch status, fault and alarm data.

What should be confirmed before ordering?

Confirm the system voltage, pole arrangement, rated current, trip curve, conductor size, protection settings and required communication interface. Installation must be completed by a qualified electrician.

GRD9S-F100 1P–4P IoT Smart MCB