GE IS410SRLYS2A IS400SRLYS2ABB | Simplex Relay Terminal Board

The GE IS410SRLYS2A / IS400SRLYS2ABB is a Mark VIeS Simplex Relay Contact Output Terminal Board designed for functional safety and industrial control applications. It interfaces discrete process actuators with the Mark VIeS safety control logic and supports the IS420YDOAS1B discrete output I/O pack. The board provides 12 Form-C relay output circuits through 48 customer terminals, with relay feedback available to the I/O pack.

The SRLY terminal board uses Euro-style box-type field wiring terminals and is designed for DIN-rail mounting. The standard configuration uses dry, unfused Form-C relay contacts, while optional WRO-series daughterboards can provide contact wetting and fusing functions.

IS410SRLYS2A

⚙️ Product Datasheet

Parameter	Specification
Brand	GE / General Electric
Model	IS410SRLYS2A / IS400SRLYS2ABB
Series	Mark VIeS
Product Name	Simplex Relay Contact Output Terminal Board
I/O Pack	IS420YDOAS1B
Number of Channels	12 Form-C Relay Outputs
Country of Origin	United States
Condition / Status	New Surplus / Original Stock
Dimensions	17.0 × 24.9 × 15.3 cm
Weight	Approx. 1 kg
Power	24/28 VDC, 19.8 W max. for I/O pack control power

🔧 Key Features

🔌 12 Form-C relay output channels
⚙️ Simplex I/O configuration
🛡️ Designed for Mark VIeS functional safety systems
🔄 Compatible with IS420YDOAS1B YDOA I/O Pack
📡 Configurable for Sequence of Events relay feedback
🔍 Power-up self-test and I/O pack health diagnostics
🧰 Euro-style box-type field wiring terminals
🏭 DIN-rail mounting
🌡️ Operating temperature: -40°C to +70°C
🛡️ IEC 61508 safety-rated design
⚡ Supports optional contact-wetting/fusing daughterboards

❓ Common Questions & Answers

Q: What is the IS410SRLYS2A used for?
A: It is a relay contact output terminal board used to interface discrete actuators with Mark VIeS safety control logic.

Q: How many relay outputs are provided?
A: The board provides 12 Form-C relay output circuits.

Q: Which I/O pack is used with this terminal board?
A: The specified I/O pack is the GE IS420YDOAS1B, which is ordered separately.

Q: Is the IS410SRLYS2A a simplex or redundant board?
A: It is designed as a Simplex relay output terminal board.

Q: Does the standard board include fusing?
A: The standard configuration uses dry Form-C contacts without fusing. Optional WRO-series daughterboards can add different contact-wetting and fusing arrangements.

Q: What is the maximum relay contact rating?
A: The published ratings include 0.6 A at 125 VDC, 1.2 A at 48 VDC, 2.25 A at 24 VDC, and 2.25 A at 120/240 VAC.

Q: Is it suitable for safety applications?
A: The IS410SRLYS2A is specified as safety-rated and compliant with IEC 61508 for the Mark VIeS functional safety system.