DC neutral tractive armature mechanism ensuring reliable operation
Fail-Safe Operation
Built for safety critical circuits
High Reliability
Consistent Performance in harsh conditions
Plug-in Design
Easy installation & maintenance
Long Service Life
Rugged build for extended durablity
Engineered for Railway Safety
Conforming to Indian Railway Standards
Available Variants
QN1 RELAY
DC Neutral Line, Non-AC Immunised Relay
QNA1 RELAY
DC Neutral Line, Non-AC Immunised Relay
Contact configurations (rear view)
12F/4B
8F/8B
Technical details
| Parameter | QN1(24V DC) | QNA1(24V DC) |
|---|---|---|
| Nominal Voltage (V DC) | 24 V DC | 24 V DC |
| Coil Resistance @ 20°C (Ω) | 345 ± 10% | 345 ± 10% |
| Max Operate Voltage | 19.2 V DC | 19.2 V DC |
| Min Release Voltage | 3.6 V DC | 3.6 V DC |
| Standard Configurations | 12F / 4B, 8F/ 8B | 12F / 4B, 8F/ 8B |
| Interlocking Code | ABCDE/ ABCDF | ABCDE/ ABCDF |
STANDARDS & COMPLIANCE
BRS
BRS Specification:
BRS 930 /931A
IRS Standards:
IRS: S34, IRS: S23 (asapplicable)
QUALITY ASSURANCE
Each QN1 Relay is manufactured under strict quality control procedures and supplied with a warranty. Comprehensive testing confirms conformity with railway signallingstandardsanddependable long-termperformance in service.
27+ YEARS of Manufactruing Excellence
Trusted Partner to Indian Railways
Advanced Manufacturing & Testing Facility
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Signalling Relays
QN1Relay
Miniature, Plug-in Type, M to C, DC Neutral Line, Non-AC Immunised Relay
The QN1 Relay is a compact, DC neutral, tractive armature line relay from the proven 'Q' series, engineeredfor safety-critical railwaysignalling. Conformingto BRS Specification 930 and applicable RDSO standards, it delivers consistent performance, long service life, and stable operation under demanding field conditions — making it the trusted choice for manufacturers, system integrators, andrailway operators worldwide.
KEY FEATURES
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DC neutral tractive armature mechanism ensuring reliable operation.
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Designed for fail-safe performance in safety-critical railway circuits.
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High insulation resistance for enhanced electrical safety.
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Sealed construction to protect against dust and environmental effects.
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Robust design for extended mechanical and electrical service life.
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Supplied complete with plug board, connectors,and retaining clips.
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Simple plug-in mounting for ease of installation and maintenance.
WARRANTY & QUALITY ASSURANCE
Each QN1 Relay is manufactured under strict quality control procedures and supplied with a warranty. Comprehensive testing confirms conformity with railway signallingstandardsanddependable long-termperformance in service.
STANDARDS & COMPLIANCE
1. BRS Specification: BRS 930
2. IRS Standards: IRS: S34, IRS: S23 (asapplicable)
TECHNICAL DETAILS OF QN1RELAY
| Relay Description | Nominal Voltage (V DC) | Contact Arrangement | Coil Resistance @ 20°C (Ω) | Max Operate Voltage (V DC) | Min Release Voltage (V DC) | Interlocking Code |
|---|---|---|---|---|---|---|
| QN1 | 24 | 12F / 4B | 345 ± 10% | 19.2 | 3.6 | ABCDE |
| QN1 | 24 | 8F / 8B | 345 ± 10% | 19.2 | 3.6 | ABCDE |
QNA1Relay
Miniature, Plug-in Type, M to C, DC Neutral Line, Non-AC Immunised Relay
The QNA1 Relay is a compact, AC immune, DC neutral, tractive armature line relay purpose-built for railway signalling environments where induced AC interference is a concern. A magnetic slug and shunt assembly on the core delivers reliable AC immunity while maintaining precise DC pickup and release characteristics. The modular plug-in construction, sealed housing, and pin- code interlocking system ensure safe interchange and simplified maintenance. The QNA1 conforms to BRS Specification 931A and is suited for long-term deploymentin safety-criticalcircuits.
KEY FEATURES
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Modular plug-in construction for easy installation and replacement.
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Relay secured to plugboard using a retaining clip.
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Pin code interlocking system ensures correct relay-plugboard matching.
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High-quality metal-to-carbon contact system for dependable switching.
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Robust mechanical construction for stable performance over extended service life.
WARRANTY & QUALITY ASSURANCE
Each QNA1 Relay is manufactured under strict quality control procedures and supplied with a warranty. Comprehensive testing confirms conformity with railway signallingstandardsanddependable long-termperformance in service.
STANDARDS & COMPLIANCE
1. BRS Specification: BRS 931A
2. IRS Standards: IRS: S34, IRS: S23, IRS: S60-78 (asapplicable)
TECHNICAL DETAILS OF QN1RELAY
| Relay Description | Nominal Voltage (V DC) | Contact Arrangement | Coil Resistance @ 20°C (Ω) | Max Operate Voltage (V DC) | Min Release Voltage (V DC) | Interlocking Code |
|---|---|---|---|---|---|---|
| QNA1 | 24 | 12F / 4B | 215 ± 10% | 19.2 | 3.6 | ABDFH |
| QNA1 | 24 | 8F / 8B | 215 ± 10% | 19.2 | 3.6 | ABDFH |
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