Why Front-Mount Auxiliary Contacts Matter

Every motor starter needs status feedback. The motor is running, the overload tripped, the contactor is on or off — your PLC needs to know. Front-mount auxiliary contact blocks provide that feedback, mounting directly on the front face of the DILM contactor without taking up extra panel space.
RF Mando added 18 new front-mount auxiliary contact SKUs to rfmando.com in 2026. This guide shows B2B distributors which SKU to stock for each contact configuration.
1. Contact Configurations Explained
Each SKU is named with its contact configuration in the suffix. The format is:
- First digit = number of NO (Normally Open) contacts
- Second digit = number of NC (Normally Closed) contacts
Examples:
- 11 = 1NO + 1NC (most common)
- 20 = 2NO
- 22 = 2NO + 2NC
- 40 = 4NO
- 04 = 4NC
2. XTCEXFBG Series (Standard Front-Mount)
General-purpose front-mount auxiliary contact blocks for DILM contactors:
Bulk price range: $34-$55 depending on contact count. Lead time 7-15 days from Xiamen.
3. XTCEXFAG Series (Front-Mount for AC)
Optimized for AC control circuits (panel builders using 230VAC controls):
Bulk price range: $35-$45 per block.
4. XTCEXFAC Series (Front-Mount ATEX/IEC/UL/CSA)
ATEX-certified auxiliary contacts for hazardous-area applications:
Bulk price range: $34-$55 per block. ATEX-rated for Zone 1/21 environments.
5. How to Choose the Right SKU
Ask 3 questions:
- How many NO/NC contacts do you need? Most PLCs need 1NO+1NC for status. If you need both motor status and fault signal, go 2NO+2NC.
- Is the environment hazardous? If yes, choose XTCEXFAC (ATEX) over XTCEXFBG (general purpose).
- What's the contactor current rating? All front-mount blocks fit DILM 7A-150A contactors. For larger frames, use side-mount instead.
6. Pricing & Contact
All 18 front-mount auxiliary contact SKUs in stock at RF Mando Xiamen warehouse. Bulk pricing from $34-$55 with 40-45% discount vs OEM channels.
- Email: Joanna@rfmando.com
- WhatsApp / Telegram: +86 189 6031 3731
- Website: https://www.rfmando.com/
Sample: 1 free per SKU (you pay $30 DHL). MOQ 10. Lead time 7-15 days. Payment T/T 30/70.