Nittan Standard Deep Base
£5.88 (inc VAT: £7.06)
Summary
The Nittan STB-4SE is a versatile standard deep base designed for indoor mounting of fire detection devices. Part of the Sensortec range, this deep profile base provides enhanced installation flexibility with its 23mm depth, making it ideal for applications requiring additional wiring space or where cable management is a consideration.
Certified to EN54-5 and EN54-7 standards, the STB-4SE offers dual termination configurations supporting both conventional and addressable fire alarm systems. This versatility makes it suitable for a wide range of installation scenarios, whether deploying traditional hardwired zones or modern addressable networks. The base features dedicated remote indicator lamp (RIL) support at 2mA and cable screen connections for optimal system performance.
Constructed from durable ABS material with a compact 104.5mm diameter, the STB-4SE operates reliably across a wide voltage range of 10-38Vdc and temperature spectrum from -10°C to +55°C. With EMC conformance to BSEN50130-4 and CE conformity certification, this base meets stringent European safety and electromagnetic compatibility standards for fire detection equipment.
Features
- Standard deep base with 23mm depth for improved cable management
- Compatible with both conventional and addressable fire alarm systems
- Suitable for Nittan Sensortec detector range
- Indoor mounting base for ceiling or wall installation
- Wide operating voltage range from 10 to 38 Vdc
- Dual wiring configurations with clearly marked terminals
- Remote indicator lamp (RIL) support at 2mA for both system types
- Dedicated cable screen connection for EMC protection
- Compact 104.5mm diameter with standard mounting pattern
- Robust ABS material construction for durability
- Operating temperature range from -10°C to +55°C
- Storage temperature tolerance from -25°C to +70°C
- Suitable for environments up to 95% relative humidity (non-condensing)
- EMC conformance to BSEN50130-4 standards
- CE conformity certified
- Complies with EN54-5 and EN54-7 fire detection standards
FAQs
What is the difference between a standard base and a deep base?
A deep base like the STB-4SE has a greater profile depth (23mm) compared to standard shallow bases. This additional depth provides more internal space for cable terminations, making installation easier when dealing with multiple cables, larger cable sizes, or complex wiring configurations. Deep bases are particularly useful in retrofit installations or where neat cable management is required.
Can this base be used with both conventional and addressable systems?
Yes, the STB-4SE features dual termination configurations. It can be wired for conventional zone circuits (with terminals 1, 3, 5, 6) or addressable loop circuits (with terminals 1, 3, 5, 6 in different configuration). The terminal layout adapts to either system type, making it a versatile choice for various fire alarm architectures.
What detectors are compatible with the STB-4SE?
The STB-4SE is designed for use with Nittan Sensortec range detectors, including smoke detectors, heat detectors, and multi-sensor detectors that feature the standard twist-lock mounting mechanism. Always verify compatibility with your specific detector model before installation.
How does the wiring differ between conventional and addressable modes?
In conventional mode: Terminal 1 is -VE in, Terminal 6 is -VE out, Terminal 3 is +VE in/out, and Terminal 5 is RIL -VE. In addressable mode: Terminal 1 is +VE, Terminal 6 is -VE, Terminal 3 is RIL -VE, and Terminal 5 is Screen. The terminal functions change to accommodate the different electrical requirements of each system type.
What is the maximum voltage this base can handle?
The STB-4SE operates within a voltage range of 10 to 38 Vdc, which is wider than many standard bases. This makes it compatible with both 24V conventional panels and addressable systems that may operate at higher loop voltages (typically up to 38Vdc), providing greater installation flexibility.
Why does this base weigh more than standard bases?
At 78g, the STB-4SE is heavier than shallow profile bases due to its deeper construction and additional ABS material. The extra weight contributes to a more robust mounting platform and provides better cable retention within the increased internal volume.
Can I use this base outdoors?
No, the STB-4SE is specified as an indoor mounting base only. It is not designed or certified for outdoor environmental conditions. For outdoor detector installations, you should use bases specifically rated for external use with appropriate IP (Ingress Protection) ratings and weatherproofing.
What is the purpose of the screen terminal?
The screen terminal (Terminal 5 in addressable mode) provides a connection point for cable screen or shield earthing. This is essential for maintaining EMC performance by reducing electromagnetic interference and improving signal integrity, particularly important in electrically noisy environments or long cable runs in addressable systems.
Specifications
- Part Number: STB-4SE (F03_82300)
- Description: Standard Deep Base
- Device Type: Indoor mounting base
- Product Range: Sensortec
- Operating Voltage: 10 to 38 Vdc
- Operating Temperature: -10°C to +55°C
- Storage Temperature: -25°C to +70°C
- Relative Humidity: ≤ RH95% non-condensing
- Material: ABS
- Dimensions: ∅104.50mm x 23.00mm
- Mass: 78g
- Conventional Terminals: 1=-VE in, 6=-VE out, 3=+VE in/out, 5=RIL -VE 2mA
- Addressable Terminals: 1=+VE, 6=-VE, 3=RIL -VE 2mA, 5=Screen
- RIL Current: 2mA
- EMC Conformance: BSEN50130-4
- CE Conformity: Yes
- Standards / Certification: Complies with EN54-5, EN54-7
Downloads
- Datasheet (Adobe PDF)
Additional information
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