Product Overview
The TOYO KEIKI IS-1B is an insulation resistance monitoring relay designed for marine electrical systems. It continuously monitors insulation resistance between an AC electrical circuit and earth, helping detect insulation deterioration and potential ground faults.
When the insulation resistance falls below the selected detection threshold, the monitor activates its alarm relay output. This makes it suitable for use in shipboard electrical panels and compatible industrial electrical monitoring systems.
Technical Specifications
Brand: TOYO KEIKI
Model: IS-1B
Product Type: Insulation Resistance Monitor Relay
Detection Point: 1 MΩ
Auxiliary Supply: Version-dependent; 100–115V AC or 200–230V AC, 50/60 Hz
Relay Contact Capacity: AC 220V, 5A
DC Contact Capacity: DC 60V, 5A
Operating Delay: Approximately 2.5 seconds
Application: Insulation resistance and earth-fault monitoring
Mounting: Electrical panel / control panel
Industry: Marine and industrial electrical systems
Key Features
Monitors insulation resistance between AC circuits and earth
Provides relay output when resistance falls below the set threshold
Helps identify insulation deterioration and potential earth faults
Designed for marine electrical monitoring applications
Suitable for replacement and maintenance of compatible installations
Applications
Ship electrical switchboards
Marine power distribution systems
Engine-room electrical panels
Electrical insulation monitoring
Industrial electrical maintenance and fault monitoring
Compatibility Information
Please confirm the auxiliary supply voltage, terminal connections, and contact ratings against the nameplate before installation. This monitor is intended for use in compatible electrical systems and should be installed by a qualified electrical technician.
Ordering Information
Contact Marine Industrial Parts for availability, quantity, product condition, and international shipping.
Marine Industrial Parts
Website: https://www.marineindustrialparts.com/
Email: sales@marineindustrialparts.com
WhatsApp: +91 9586406095
Worldwide shipping available. Contact us for a quotation.
